A flaw in Telegram for Android allowed an attacker to run code on a victim's phone via a voice call once the victim answered, according to security startup NebuSec. The attacker needed only an ordinary Telegram account. Telegram fixed the flaw in version 12.10.4 of the app, released in late September, and NebuSec disclosed it on October 29. The flaw can be triggered in every version from
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Cisco has released patches to address a high-severity security flaw in Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software that it said has been exploited in the wild. The vulnerability, tracked as CVE-2026-76418, is rated 8.6 on the CVSS scoring system. Successful exploitation could allow an unauthenticated, remote attacker to cause the
Websites around the world have been taken offline as governments and businesses scramble to fix a flaw in the computer language PHP. There are fears that hackers could exploit the vulnerability to steal data, take control of web servers and disrupt services. Millions of attempts have already been made to attack websites since the issue with the programming language was revealed, cybersecurity companies have said. Michael Safi speaks to global technology reporter Aisha Down Continue reading...
The critical flaw in UEFI firmware—used by most server vendors and data centers—allows attackers to execute code early in the boot process.
Adobe has released patches to address multiple critical security flaws in Campaign Classic that, if successfully exploited, could result in arbitrary code execution, security feature bypass, and privilege escalation. The list of eight vulnerabilities is as follows - CVE-2026-104351 (CVSS score: 9.9) - A code injection vulnerability that could lead to arbitrary code execution.
Latest
Thursday, October 29
Few week ago I posted CVE Intel here and got really good advice. Thank you all. Here's what's new since then. (original post: [https://www.reddit.com/r/cybersecurity/comments/1x8v176/opensource\_cve\_triage\_in\_one\_place\_kev\_epss\_nvd/](https://www.reddit.com/r/cybersecurity/comments/1x8v176/opensource_cve_triage_in_one_place_kev_epss_nvd/)) Quick what: CVE Intel is an open-source tool that pulls CVE data from NVD, CISA KEV, EPSS, OSV and public exploit sources into one place. It runs as a desktop app, CLI, REST API or MCP server. It can also scan your dependencies, your machine, container images and your own domains. Updates * Decisions. Record what you decided about a CVE (patch now, defer, accept the risk, not affected) and the assumptions behind it, like "not in KEV" or "EPSS below X". Every watchlist refresh re-checks them. When a CVE lands in KEV or gets a Metasploit module, the decision turns stale and tells you why. It also shows how your past calls held up, and exports to OpenVEX or CycloneDX VEX. It stays on your machine, and AI agents can read it but can't change it. * Scanning. It can scan project lockfiles and CycloneDX/SPDX SBOMs (with the fixed version for each package and SARIF output), the apps and OS on your machine, container images without needing Docker, and your own domains. Domain scans are passive, using certificate transparency, DNS and Shodan/InternetDB, and never connect to the target. Rescans show what's new, fixed or riskier, and the CLI has --fail-on gates for CI. * Who says what. Triage now puts NVD, the CNA, CISA, EPSS, KEV, ENISA and the distros side by side and names where they disagree. For example, NVD hasn't analysed the CVE yet, or a source says it's exploited but KEV doesn't list it. It doesn't touch the risk score. * Exploit speed. A rough estimate of how soon a public exploit might appear, based on the public fix commit, the weakness type and the CVSS vector. It's a heuristic and says so. * Attack chains. Scans link findings into chains and show the one fix that breaks the most of them. * SBOM out. Any scan can be saved as a CycloneDX SBOM with the findings in it. From your earlier comments: triage checks ENISA's exploited flag, CIRCL and VulnCheck KEV (these feed SSVC but don't change the score), EPSS has 7- and 30-day trends, and deep triage gives a CISA SSVC decision. An as-of date next to every value is still on my list. Thank you very much for the comments. They've help me shaped this project to be better. Please feel free to contribute, whether it's a bug report, a PR. Thank u!!! [https://github.com/Fazmin/cve-intel](https://github.com/Fazmin/cve-intel)
What if a VNC server could make your viewer believe it had a \~4 GB framebuffer… while actually allocating only 128 KB? That’s the core of this TightVNC vulnerability. A malicious server can announce a crafted 32768 × 32769 screen at 32bpp, causing the framebuffer size calculation to overflow. The allocation wraps down to 128 KB, but the viewer continues using the original, much larger dimensions when calculating pixel writes. The result is a server-controlled out-of-bounds write in the viewer. It’s a good example of how a relatively small integer-overflow mistake can become a powerful memory-corruption primitive when different parts of the application disagree about the true size of a buffer.
Reverse engineering Peugeot SMEG+: VxWorks 6.7 and native UI in a custom QEMU MPC5121E model (AI-assisted)
Google on Wednesday took the wraps off Gemini 4 Carbon, its latest frontier model with state-of-the-art cybersecurity and long-horizon capabilities. "It shows significant gains across coding and agentic tasks as well as across key capabilities critical for cybersecurity defense, landing a firm lead in SEC-bench Pro (88.2%) for finding vulnerabilities, ExploitGym (54.8%) for exploitation, and
Help analyzing a suspicious domain with conflicting TLS certificate information and 0 VirusTotal detections
Hey everyone, A friend sent me screenshots showing certificate details for a domain, and I'm trying to understand whether there's anything suspicious about it. **Domain:** [`hristinashamet.club`](http://hristinashamet.club) Here’s what I found during my investigation: * **VirusTotal:** 0 detections in the URL report I checked. * **URLScan.io:** [Scan report](https://urlscan.io/result/01a184a6-e959-717a-8786-32b1f6f59b1b/) * **IP address:** [`54.175.168.31`](http://54.175.168.31) (Amazon AWS, Ashburn, United States). * **HTTP status:** 200. * **Content-Type:** `application/octet-stream`. * **URLScan behavior:** Only one HTTP transaction, 0 bytes transferred, no cookies, and the page title was `chrome://newtab/`. * **TLS certificate:** The iPhone screenshots showed the certificate as expired/untrusted. However, URLScan's report mentions a certificate issued for `*.malware.com` on May 13, 2020, with a 10-year validity period. I'm particularly interested in the discrepancy between the certificate shown on the iPhone and the certificate reported by URLScan. I understand that 0 VirusTotal detections doesn't guarantee a domain is safe, and that an AWS-hosted IP address isn't inherently suspicious. I also don't want to label the domain as malicious without sufficient evidence. **My questions:** 1. What could explain the different TLS certificate information? 2. Does the `application/octet-stream` response combined with the empty URLScan result suggest anything meaningful? 3. Are there additional passive analysis techniques I should use to investigate the domain safely? 4. Is there any reliable historical reputation data for this domain? >Additional findings: The URLScan report shows the text “THIS PAGE IS BLOCKED — Your organization doesn’t allow you to view this site,” followed by a JSON message stating `"You're not logged in!"`. It found no HTML forms in the scanned DOM. I'm unsure whether this is a security gateway block page, an application response, or something else. I haven't established how my friend encountered the domain, and I'm not claiming that it is malicious. I'm looking for help interpreting the evidence and deciding what to investigate next. Thanks!
Welcome to the 26th edition of Cloudflare's DDoS Threat Report. This edition covers the third quarter of 2026 — July, August, and September — and returns the series to its quarterly cadence following the combined H1 2026 volume. The analysis is produced by Cloudforce One , Cloudflare's Threat Intelligence organization, providing a comprehensive analysis of the evolving threat landscape of Distributed Denial of Service (DDoS) attacks based on data from the Cloudflare network . Key insights Short-burst, low-bandwidth attacks lasting under 10 minutes and 1 Gbps surged by 208%. Conversely, hyper-volumetric attacks exceeding 1 Tbps plummeted by nearly 69% from Q2, possibly a reflection of law enforcement actions against four major Internet of Things (IoT) botnets earlier in the year. However, variants continue to emerge, proving that IoT botnets remain a durable, high-volume threat to network infrastructure. Threat actors dramatically shifted their reflection and amplification tactics, abruptly abandoning CLDAP floods, which collapsed by 99.5% quarter-over-quarter. Instead, attackers pivoted heavily toward other connectionless protocols, driving a 215% surge in DNS amplification and a 122% increase in general UDP floods. Attack targets broadened significantly across both industries and geographies, with the United States reclaiming the most-attacked position from China. Canada and Israel experienced sharp spikes in targeted attacks — jumping 10 and 7 spots respectively — while juggling geopolitical tensions, trade disputes, and contentious domestic events. At the same time, the operational focus shifted aw
I'm a CISSP, CISM, Sec+, & doctoral candidate at Capitol Technology University, MD. I'm researching which security controls actually enable recovery and resilience in small and medium-size orgs. Takes 15–25 minutes. Anonymous. No compensation. IRB-approved. Need U.S. based I.T. folks from organizations that experienced a ransomware attack between 2021–2025. Would appreciate your help. Please share. Thank you! https://techstudy.limesurvey.net/748327?lang=en&newtest=Y
GitHub - 1llu50ry/aegis: Zero-dependency single-header C++20 software protection SDK (10,000+ LOC): polymorphic stack-register VM, script-to-bytecode compiler, compile-time MBA & string obfuscation, 25+ cryptographic primitives, anti-debug/anti-dump, memory integrity watchdog & HWID licensing.
A vendor gets a call from one of its biggest MSP partners who needs something the vendor can’t supply. The vendor knows a competitor can, so it points them there. That sounds like a good way to lose a partner, but it wasn’t. They stayed, and they spent even more over the next few years. […] The post The best due diligence on a vendor is who they’ve worked with appeared first on Heimdal Security Blog .
A flaw in Telegram for Android allowed an attacker to run code on a victim's phone via a voice call once the victim answered, according to security startup NebuSec. The attacker needed only an ordinary Telegram account. Telegram fixed the flaw in version 12.10.4 of the app, released in late September, and NebuSec disclosed it on October 29. The flaw can be triggered in every version from
AI is beginning to take over much of the work that has traditionally defined the security analyst's job. Investigating alerts, collecting evidence, correlating activity across tools, and executing response actions are becoming tasks that AI systems can perform on their own. As these capabilities mature, security operations centers (SOCs) will see major changes in how work is organized, how
26,400 credentials that developers left in public code on Gitee, a Chinese code-hosting service, still worked when a researcher tested them. Anyone who copied one from that code could have used it. Independent researcher Ben Zimmermann found them by scanning 7.25 million public Gitee repositories and reported the results on October 28. Most were keys for cloud and AI services, led by
Cisco has released patches to address a high-severity security flaw in Secure Firewall Adaptive Security Appliance (ASA) Software and Secure Firewall Threat Defense (FTD) Software that it said has been exploited in the wild. The vulnerability, tracked as CVE-2026-76418, is rated 8.6 on the CVSS scoring system. Successful exploitation could allow an unauthenticated, remote attacker to cause the
Illicit software on the computers of some of the world’s best online poker players allowed the accused cheater to see what cards were in the victims’ hands—and trounce them at the tables.
GitHub has announced that it's introducing a new package firewall as a preview to block installation of suspicious npm packages during installation time. "The firewall inspects both metadata requests and package downloads for signs of malicious activity, acting as an install-time policy gate," GitHub said. The feature, which currently supports only npm packages, is available in public preview
I've spent the last four days investigating and fine-tuning a remote DoS against the Linux kernel's TIPC implementation. A remote peer-state transition can trigger a NULL pointer dereference in TIPC's name-distribution path, causing a kernel panic and taking down the host. I've really enjoyed digging into this, and I'm pretty happy with how the research turned out.
This is my best project till now I didn't use rea for this though I learned and created , it is a bit unorganised and it doesn't have a frontend but it does work pretty well , it creates video with hooking topics and subtitles and musics and posts itself in YouTube and instagram, you just have to se
Bluesky tells WIRED it blocked links to a leaked archive of information on 41,000 ICE, CBP, and other DHS workers because it contains people’s contact information, shared without their authorization.
We reproduced CVE-2026-111497, an out-of-bounds write in the Brotli decoder bundled with Node.js and other runtimes, and explain how to detect and remediate it.
Wednesday, October 28
The critical flaw in UEFI firmware—used by most server vendors and data centers—allows attackers to execute code early in the boot process.
The leaked records include the locations of ICE and CBP facilities, workers’ cell phone numbers, and the members of groups tied to wiretap programs, Palantir software, and xAI’s Grok chatbot.
Our Threat Research Unit published a breakdown of “The Gentlemen” - a Russian-speaking ransomware-as-a-service group that emerged in mid-2025, reportedly after affiliates split off from established groups like LockBit and Qilin. A few things that stood out from the research: * They’re offering affiliates up to 90% of ransom revenue - aggressive even by RaaS standards * Claimed 800+ victims across the US and Europe, making them one of the top RaaS groups this year * Cross-platform ransomware variants targeting Windows, Linux, NAS, and BSD * Active use of EDR-killing tooling - one recent incident involved a custom dropper abusing vulnerable Safetica ProcessMonitor and Lenovo BootRepair.sys drivers (BYOVD) * A breach of the group’s own infrastructure gave researchers rare visibility into their affiliate network, tooling, and ties to the broader ransomware ecosystem Full technical writeup linked below for anyone who wants to dig into the IOCs and affiliate details. [https://www.acronis.com/en/tru/posts/the-gentlemen-a-closer-look-at-a-not-so-gentle-ransomware-as-a-service-operation/](https://www.acronis.com/en/tru/posts/the-gentlemen-a-closer-look-at-a-not-so-gentle-ransomware-as-a-service-operation/)
The China-nexus cyber espionage group known as Volt Typhoon has been attributed to a now-disrupted covert access network dubbed Silent Train that has been put to use for zero-day exploitation and strategic access. "First identified in late 2023, Silent Train uses rotating chains of compromised SOHO, IoT, and enterprise infrastructure," Lumen Technologies Black Lotus Labs said in a report shared
October 28 | 24h Recap: Firewall breaches expose credentials, firmware boot risk and AI exploit research
Three developments for security teams: 1. **Firewall compromise reaches internal systems:** Dream’s PHP2Shell investigation shows attackers moving from exposed firewalls to centralized management and directory credentials. Patching needs to be accompanied by checks for persistence and stolen secrets. 2. **Network boot creates firmware exposure:** A long-standing EDK II flaw can execute code before the operating system loads. Establish which systems actually use PXE and whether untrusted traffic can reach them during boot. 3. **AI research produces working exploit chains:** Anthropic reports an internal model built exploits affecting browsers and operating systems with limited human involvement. Vendors released fixes before publication, making this a capability demonstration with concrete patching relevance. Read the full recap on CyberRecaps.
Third-party Android app stores can now apply to Google for permission to install apps with one tap, without Android's usual confirmation screens, and to update them in the background. To qualify, a store must pass identity checks and send Google its full catalog, along with every new app and update, for ongoing malware scanning. Approved stores get the features from December 1, but only on
A chain of logic flaws, with no memory corruption, can turn a malicious web page into code running on a Windows computer outside Microsoft Edge's sandbox, a security researcher has shown. Orange Tsai of DEVCORE published the full method on October 28, five months after the chain won $175,000 at the Pwn2Own Berlin contest in May. Microsoft fixed the Edge bugs the day after the contest,
Cybersecurity researchers have disclosed details of what appears to be an artificial intelligence (AI)-assisted attack orchestrated by a suspected China-nexus threat actor that has leveraged the PHP2Shell vulnerabilities to breach exposed systems. The activity, which was observed on October 25, 2026, involved an attacker combining PHP2Shell with a kernel privilege escalation exploit to root
Tailscale released version 1.104.4 after researchers demonstrated privilege-escalation vulnerabilities in Tailscale SSH. An attacker with access to an already-authorized device could potentially gain elevated privileges on reachable systems. A compromised machine could become a stepping stone into other servers permitted by SSH policy. This is not an unauthenticated Internet-wide worm. Update Tailscale SSH systems and review SSH access permissions.
Inside our inline hooking engine: relocating prologues with iced-x86 (x86-64 + AArch64, deps closed to two crates)
Threat actors are beginning to probe for a newly patched critical vulnerability in Oracle E-Business Suite (EBS), according to threat intelligence firm Defused Cyber. The vulnerability in question is CVE-2026-101767 (CVSS score: 9.8) , a case of improper authentication in the Oracle Application Object Library of Oracle E-Business Suite. It was patched by Oracle last week as part of its Critical
Artificial Intelligence (AI) has become one of this decade's defining technologies. From healthcare and finance to manufacturing and education, organizations increasingly rely on AI to automate repetitive tasks, uncover patterns hidden within large datasets, and support faster decision-making. Cybersecurity has experienced a similar transformation. While attackers employ AI to automate
Adobe has released patches to address multiple critical security flaws in Campaign Classic that, if successfully exploited, could result in arbitrary code execution, security feature bypass, and privilege escalation. The list of eight vulnerabilities is as follows - CVE-2026-104351 (CVSS score: 9.9) - A code injection vulnerability that could lead to arbitrary code execution.
ICE’s Homeland Security Investigations is engaged in far-reaching spying against left-wing activists that rivals the FBI and CIA crackdowns on the Civil Rights and anti-war movements.
ElectroNG is now free and open source.
Tuesday, October 27
New Kerberos Abuse Path Discovery - Constrained Delegation without Protocol Transition against SPN-less accounts
I've recently released a blog covering how I discovered a new Kerberos delegation abuse path! By combining Elad Shamir's Reflective RBCD with James Forshaw's U2U sacrificial user technique, Constrained Delegation without Protocol Transition can now be abused against SPN-less accounts. I also had to add S4U2Proxy + U2U support to Impacket to get this working. :) Blog: https://hunio.org/security/abusing-constrained-delegation-without-protocol-transition-against-spn-less-accounts Impacket PR: https://github.com/fortra/impacket/pull/2324
Cutting Through the php2shell Noise On October 20, details of php2shell, two pre-auth RCE vulnerabilities in the PHP core discovered by Calif (CVE-2026-109618 and CVE-2026-109619), leaked ahead of coordinated disclosure. Advisories listing affected versions followed quickly, along with a flood of PoCs, many AI-generated and non-functional. We waited until we had our own data. This post covers what we learned building and testing exploits. In short, php2shell is exploitable but more conditional than some coverage suggests. Our analysis indicates that exploitation is heavily version dependent, and that the precise heap layouts required to exploit under the default display_errors=Off setting make it much more difficult than the non-default display_errors=On scenario. We will delve into why this is the case further into the post. Almost all of the public exploits released for php2shell focus on the dangling “PS” session global variables case, which impacts instances of Apache running mod_php or applications serving PHP code using the “php -S” development server like in the Steal My Bitcoin challenge . Our analysis focused heavily on the mod_php exploitation path. However, we’re starting to see early signs of exploits targeting the second vulnerability with the serializer, which affects PHP-FPM, such as kengwang/php2shell-fpm-exp . We haven’t yet had the opportunity to fully analyze that exploitation path and confirm the published exploit works. This article will focus on explaining why the mod_php exploitation scenario is exploitable, where the real-world risk is, and what organizations can do to be better prepared for events like this in the future.
Jess Asato’s public campaigning for victims of online abuse put her in the crosshairs of Grok’s deepfake scandal. Then the UK member of parliament became a victim of the abuse herself.
Last week was one for the Internet security history books. First, eight eMudhra intermediate certificates were compromised , creating the possibility of forged certificates that could be used to impersonate servers. Then came php2shell : serious vulnerabilities in PHP, the runtime behind a large portion of the Web. Cloudflare worked around the clock as these events unfolded to protect our customers and help protect the Internet. We shipped client updates and multiple mitigations , updated our web application firewall (WAF) with new rules to block attackers from exploiting the PHP vulnerabilities, and introduced a new feature called full transaction detection . As always in situations like this, these new capabilities were made available on all plans, including Free. Put our WAF to the test Protecting systems from vulnerabilities like these is always an ongoing process, not a one-time event. The widespread adoption of AI allows attackers to discover new vectors with unprecedented speed and efficiency, so collecting real-world data to test our assumptions and strengthen defenses is essential. That’s why today we're launching the Cloudflare PHP Capture the Flag challenge , run through our Bug Bounty program . We've put a deliberately vulnerable PHP installation behi
The Internet can feel invisible when everything is working normally. But when connectivity breaks, the many systems it depends upon become evident in an instant. Because Cloudflare’s global network handles more than 20% of the web’s traffic, it offers a unique perspective of how Internet traffic is behaving. When failures in infrastructure, power, policy, or security disrupt access to the Internet, Cloudflare Radar can observe the impact by monitoring traffic to our customers. Each quarter, we review the disruptions detected and annotated on Radar, highlighting what happened, where it happened, and the broader conditions that shaped each event. In this post, we examine the major categories of Internet disruptions observed during the third quarter of 2026, including government-directed shutdowns, power outages and natural disasters. Disruptions at a glance Between July and September, Internet disruptions were largely driven by failures in the systems the Internet depends on. Power grids failed in Cuba, Honduras, Guam, Ukraine, and several other countries. Natural disasters damaged electricity and telecommunications infrastructure from Nepal to Colombia. Government-directed shutdowns remained the most frequent source of disruption, driven largely by exam-related shutdowns in Iraq, while renewed conflict in Ethiopia’s Tigray region showed how quickly connectivity can become part of a broader political and humanitarian crisis. Outages within the United States, Japan, and Portugal — countries with a relatively strong history of Internet resilience — remind us that no country is immune to disruption. In total, Cloudflare Radar recorded 49 disruptions during the quarter. Government-directed shutdowns accounted for 19 incidents, including 18 exam shutdowns in Iraq. Power outages followed with 14 incidents, while natural disasters accounted for five.
Enterprise web application penetration testing typically runs on a multi-week cycle covering scoping, testing, reporting, and retest. Cost is driven mainly by application complexity and user role count, not page count or site size. The most common scoping mistake enterprises make is under-counting authenticated user roles, which quietly expands the actual testing effort well beyond what the initial scope assumed. The post Web Application Penetration Testing Services for Enterprises: Scope, Timeline, and Cost appeared first on Synack .
We are pleased to share that we have been named winner of Advanced Persistent Threat (APT) Solution of the Year at the Computing Security Awards for ESEC ATP, the Email Security Advanced Threat Protection (ATP) module of the Heimdal platform. Targeted attackers are patient, and many intrusions begin with a single email that looks routine. […] The post Heimdal named Advanced Persistent Threat Solution of the Year at the Computing Security Awards appeared first on Heimdal Security Blog .
Understand cybersecurity megatrends with our rundown of 2026 data breach statistics [with data sourced from original studies published this year]. At Heimdal, we continually monitor specialist blogs, newsfeeds, forums and government websites that report on data breaches. This helps us build a picture of the latest trends in cyber crime, so we can better protect […] The post Data Breach Statistics That Matter in 2026 appeared first on Heimdal Security Blog .
Presently sponsored by: Report URI: Guarding you from rogue JavaScript! Don’t get pwned; get real-time alerts & prevent breaches #SecureYourSite As the news from last week has settled down, it would seem this headline was pretty spot on. The foretold apocalypse didn't eventuate, and there were no internet-destroying outages. In fact, it took days before I could find a single story of PHP2Shell being reliably attributed back to a breach. And I don't think we can say the relatively benign outcome was only achieved because we did take it so seriously either; there's a massive trove of sites out there that have been left to rot and would have every opportunity to be pwned by a bug of this magnitude that was readily exploitable , yet here we are. Which is good
Summary Project Zero compared two automated tools used by Google to find vulnerabilities in Chrome’s JavaScript engine, V8, on a regular basis. Fuzzilli is a generative JavaScript engine fuzzer and BigSleep is an LLM-based bug finding system. In the past six months, BigSleep found more vulnerabilities than Fuzzilli (45 versus 37) with a 25% overlap in the specific bugs reported. Since this comparison methodology has a tendency to underestimate overlap, we also performed dedicated experiments to test theoretical overlap in vulnerabilities reported since 2023. These experiments estimated overlap at roughly 60%. Regardless of which value is accurate, a substantial portion of vulnerabilities were discoverable by only LLMs or only fuzzing. While it is extremely promising that LLMs have become able to find so many vulnerabilities so quickly, fuzzing and LLMs are still complementary approaches. We recommend vendors perform both fuzzing and agentic analysis of their code to maximize the number of vulnerabilities that get reported before they impact users.
Monday, October 26
Overview Fireblocks' mpc-lib library contains a cryptographic fail-open vulnerability in its BIP32 hardened derivation implementation in the case of a missing private parent key. This breaks the ancestor isolation property of hardened derivation, allowing an attacker with a compromised lower-level signer share to recover the higher-level share it was derived from. After reviewing the feedback from Fireblocks and further analysis of the case, we have determined that this does not constitute a valid vulnerability. Fireblocks clarified that mpc-lib's signing protocols use only non-hardened BIP32 derivation and that a hardened index is handled as a non-hardened one. Effective exploitation would require privileged access, at which point the attacker would already hold the master share, rendering the issue moot. Description Fireblocks is a digital-asset custody and wallet platform that secures the private keys behind cryptocurrency wallets for institutions and exchanges, using multi-party computation (MPC) so that no single machine ever holds a complete key. Fireblocks’ key security pipeline contains two layers: MPC, which splits a single key into shares, and hardened derivation, which mathematically isolates each share from its key hierarchy. Normally, the derivation delta between parent and child keys is formed by hashing the private parent key, a derivation index, and associated metadata. VU#701544.1 A fail-open vulnerability was identified within the BIP32 hardened derivation implementation which fails to reject operations where no parent secret is present. If a parent key is missing, the implementation substitutes the secret parent contribution with a null buffer. Because the buffer becomes a known constant, 0, the delta becomes computable, violatin
On September 8, 2026, we were alerted by a security researcher, Gadi Evron from Knostic , to a tenant isolation issue affecting the GLM-5.3 Workers AI model ( @cf/zai-org/glm-5.3 ) starting on August 27, 2026. We have remediated the issue, and we restored the model on September 9. We have confirmed that no other model hosted on Workers AI was affected. Between August 27 and September 9, a small number of customers using the GLM 5.3 Workers AI model received responses that contained data from other customers' requests made to the same model shortly before theirs. In total, 155 responses were affected, all to prompts longer than 681,280 tokens. After excluding our own testing and the researcher's, the requests we identified are consistent in timing and volume with ordinary long-context use, not with someone repeatedly exploiting the bug. We found no evidence of deliberate exploitation. Today we are publishing this report alongside a post from SGLang, the open-source inference engine that we use, as a coordinated disclosure. This post describes the bug that caused this issue, our response timeline, and the subsequent hardening we have conducted on our production SGLang deployments. We also detail our continued efforts with the upstream maintainers of SGLang to address this and similar bugs. What happened GLM is a text generation model from Z.ai that is built for agentic coding workflows; it is one of the many models available through Workers AI. Gadi Evron submitted a report on September 8 through our HackerOne program stating that very long prompts sent to @cf/zai-org/glm-5.3 on Workers AI sometimes returned text that belonged to other users' sessions. Cloudflare reproduced the issue the next morning and took the model of
Overview vsomeip, COVESA's open source implementation of the SOME/IP automotive communication middleware, contained a memory allocation vulnerability present in versions 3.7.3 and below. A vsomeip reliable (TCP) SOME/IP endpoint grows its receive buffer to an attacker-declared message size before validating that the declared bytes have actually been received, allowing a remote, unauthenticated peer to exhaust host memory and deny service. The issue was reported publicly as COVESA/vsomeip issue #1009 and fixed in release 3.7.4 (2026-07-06). Description CVE-2026-91141 vsomeip is a middleware implementation of the Scalable service-Oriented MiddlewarE over IP (SOME/IP) protocol, widely used for service-oriented communication between electronic control units (ECUs) in automotive and other embedded environments. A SOME/IP message begins with a 16-byte header that includes a 32-bit length field declaring the size of the message that follows. A vulnerability was discovered in the handling of this length field on reliable (TCP) endpoints. When a message arrives, vsomeip grows its receive buffer to the size declared in the length field in order to read the incoming message, before confirming that those bytes have actually been received. In the default configuration, no size limit is applied to reliable endpoints, so a peer can declare a message size of up to roughly 4 GB and cause the receiver to allocate that memory. Because a freshly accepted connection reaches this path on its first message, no valid service, credentials, or SOME/IP authentication are required to trigger the allocation. The client endpoint contains the same behavior, where a malicious or compromised server can attack a connecting client. Deployments that explicitly configure a reliable message-size limit are not affected.
Heap overflow in EDK2’s Brotli decompressor: the CVE-2021-28211 fix was applied to LZMA and never to Brotli
Two US senators say the Trump administration is breaking the law by withholding the FISA court decision while it presses Congress to renew America’s most sweeping surveillance program.
TrendAI Vision One is a hugely successful cybersecurity solution. The technology counts tens of thousands of customers worldwide, and has received high marketplace rankings by the likes of Gartner and IDC. Nevertheless, it’s not always right for everyone. If you feel you need a different provider, this guide is for you. We’ve compiled a list […] The post 6 alternatives to TrendAI Vision One appeared first on Heimdal Security Blog .
This post breaks down essential code security terms and tools so that you can build safely from the start.
Sunday, October 25
Vivisection of Hermes: An Active Russian-Market Malware-as-a-Service Platform and Its PyMapper Distribution Chain
I'm the author. The full technical report, including the artifact links and validation records, is here: [https://papers.lisdex.sh/hermes/report.pdf](https://papers.lisdex.sh/hermes/report.pdf) Happy to answer questions about the analysis.
‘Session cookies’ are a primary target for hackers letting them hijack and use your accounts You’ve had a busy morning of life admin, logging into various accounts to check balances and make payments. At the end of a productive few hours you close your laptop and move on to your next job. What you don’t know is that fraudsters have hijacked your session with the bank and are now able to access your account. You are the victim of cookie theft, which belongs to a type of fraud known as “session hijacking”. Continue reading...
Saturday, October 24
Security researchers used AI tools to help uncover years-old vulnerabilities in the PHP web scripting language. Then the AI-assisted attacks began.
Friday, October 23
PHP2Shell demands prompt patching and evidence that remediation worked. Mark Kuhr explains how exploitability validation and experts working with agentic AI help security teams understand exposure and act with confidence. The post PHP2Shell and the Case for Exploitability Validation appeared first on Synack .
A video player seeking to the middle of a movie asks for a few megabytes. Under our old range caching, that one request could make Cloudflare pull 128 MiB from the origin and move it between data centers, sometimes after the viewer had already left. Range requests are how large files get delivered, and caching them naively easily leads to wasted network bandwidth and wasted disk operations when running a CDN at scale. So we rebuilt how our cache handles them. For R2, Cloudflare's object storage, p99 time to first byte dropped by about half, and a follow-up improvement cut tiered cache traffic for R2 and similar workloads by about 6%. Today, we're making that new implementation available as Origin Range Requests , a self-service feature on all plans. There's no range size to tune and no need to contact support. Turn it on with a Cache Rule , and Cloudflare handles the rest. A request for part of a file An HTTP range request asks for part of a resource instead of the whole resource. The client sends a normal GET with a Range header: GET /movie.mp4 HTTP/1.1 Host: example.com Range: bytes=1048576-2097151 If the server supports the request, it returns 206 Partial Content and identifies the returned bytes with Content-Range : HTTP/1.1 206 Partial Content Content-Range: bytes 1048576-2097151/524288000 Content-Length: 1048576 Range requests are common for large objects. A video player can request bytes around a seek position instead of the whole file. A download manager can resume aft
Today, Cloudflare is launching a post-quantum geographically restricted key manager in support of our Data Localization Suite (DLS) in closed beta. This new PQ GeoKey Manager is a cornerstone of Cloudflare’s data sovereignty solutions, making sure that a customer's decryption keys are only accessible in their chosen geography. GeoKey Manager implements this by wrapping each decryption key such that it can only be decrypted by Cloudflare servers that are located in the allowed geography. While general availability (GA) is planned for Q1 2027, today’s launch is an important milestone on our journey to support our customers’ data sovereignty goals while also migrating all Cloudflare products to post-quantum (PQ) cryptography . Governments, financial institutions, healthcare providers, and defense organizations process highly sensitive data that can remain sensitive for years or decades after it is produced. Encryption is often required to protect this data. When classical, public-key encryption is used, adversaries do not immediately need a quantum computer today to put that data at risk: they can store the ciphertext and retain them until quantum computers can break the public key cryptography protecting it — an attack strategy known as harvest now, decrypt later. For organizations with geographic requirements, resisting that threat is only half the challenge. At Cloudflare's scale, high availability requires replicating customer data across many servers across our global network. However, many data sovereignty regulations require that certain types of data be processed only within a given geographical region. We must therefore ensure the data is end-to-end encrypted such that only servers within the region have access to the plaintext. In this post, we describe the system that makes this work. The evolution of GeoKey Mana
Thursday, October 22
Overview Two memory-related vulnerabilities have been identified in PHP versions prior to 8.2.35, 8.3.36, 8.4.27, and 8.5.12. An unauthenticated remote attacker with network access to PHP web services can exploit these vulnerabilities via specially crafted HTTP requests to potentially achieve arbitrary code execution. Description PHP is a widely used open-source scripting language designed for web development and server-side applications. It powers millions of websites and web applications worldwide and can be deployed through a variety of server configurations, including PHP-FPM, Apache with mod_php, php-cgi, FrankenPHP, and LiteSpeed. CVE-2026-109618 : A memory corruption vulnerability exists in the out-of-memory (OOM) handling mechanism of PHP versions prior to 8.2.35, 8.3.36, 8.4.27, and 8.5.12. The vulnerability occurs when an OOM condition interrupts request processing while internal request data is only partially initialized; subsequent cleanup routines may access the invalid memory, potentially causing memory corruption and enabling arbitrary code execution. CVE-2026-109619 : A use-after-free vulnerability exists in the global state management of PHP versions prior to 8.2.35, 8.3.36, 8.4.27, and 8.5.12. The vulnerability occurs when a worker retains a reference to request-owned state after its backing memory has been freed. A subsequent request handled by the same worker can access this stale state before normal request initialization resets it, potentially causing memory corruption and enabling arbitrary code execution. Impact Successful exploitation of these vulnerabilities allows an unauthenticated attacker to remotely execute arbitrary code via specially crafted HTTP requests, compromising the confidentiality,
The current US administration is an obstacle, but public demand for protection will ultimately prevail Organisations around the world scrambled on Thursday to fix critical flaws in PHP, the software that powers much of the web. The vulnerabilities could allow attackers to take control of affected servers. Some websites were taken offline as a precaution while fixes were installed. The paradox is that while AI helped researchers uncover the flaw, it also threatens to accelerate the ability to exploit it. Amazon said that it had detected an attempt before the public disclosure of the PHP flaws. What the episode highlights is AI’s central role in security – and not always for the right reasons. OpenAI’s models have also been responsible for two alarming hacks this year – a security breach of an Australian health department website and a raid by a swarm of AI bots on Hugging Face, an AI services platform. Citing those incidents, the AI minister, Kanishka Narayan, warned that a similar cyber-attack on the UK is “likely, if not inevitable”.
Websites around the world have been taken offline as governments and businesses scramble to fix a flaw in the computer language PHP. There are fears that hackers could exploit the vulnerability to steal data, take control of web servers and disrupt services. Millions of attempts have already been made to attack websites since the issue with the programming language was revealed, cybersecurity companies have said. Michael Safi speaks to global technology reporter Aisha Down Continue reading...
An estimated 70% of websites use the open-source language. What is the identified vulnerability in it? Website owners faced millions of attempts to exploit a serious security vulnerability in their programming language, it has emerged, triggering a rush by governments and businesses to fix the problem. The newly discovered vulnerabilities in PHP, a programming language that underpins most websites, allows hackers to carry out cyber-attacks and steal data if not fixed. What were the vulnerabilities and why did they affect so many sites? Continue reading...