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> Bulletin d'actualité CERTFR-2026-ACT-021 (11 mai 2026)
Ce bulletin d'actualité du CERT-FR revient sur les vulnérabilités significatives de la semaine passée pour souligner leurs criticités. Il ne remplace pas l'analyse de l'ensemble des avis et alertes publiés par le CERT-FR dans le cadre d'une analyse de risques pour prioriser l'application des...
> Multiples vulnérabilités dans les produits VMware (11 mai 2026)
De multiples vulnérabilités ont été découvertes dans les produits VMware. Elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur.
> GPT-5.5-Cyber is here. What it means for defenders operating at the frontier.
OpenAI’s May 7 release of GPT-5.5 and the limited preview of GPT-5.5-Cyber put frontier AI in verified defenders’ hands. As a member of the Trusted Access for Cyber program, Sophos is using these models to sharpen what we already operate: an agentic SOC that resolves more than half of cases without...
> Multiples vulnérabilités dans les produits Spring (11 mai 2026)
De multiples vulnérabilités ont été découvertes dans les produits Spring. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et une atteinte à la confidentialité des données.
> Multiples vulnérabilités dans Microsoft Azure Linux (11 mai 2026)
De multiples vulnérabilités ont été découvertes dans Microsoft Azure Linux. Elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur.
> Ransomware: AI changes the writer. It doesn't change the math.
Why most endpoint protection still treats ransomware as just another piece of malware, and what changes when you watch the data instead of the attacker.Categories: Products & ServicesTags: Ransomware, Endpoint, Sophos Endpoint, EDR, AI, artificial intelligence
> Multiples vulnérabilités dans PHP (11 mai 2026)
De multiples vulnérabilités ont été découvertes dans PHP. Certaines d'entre elles permettent à un attaquant de provoquer un déni de service à distance, une injection SQL (SQLi) et une injection de code indirecte à distance (XSS).
> Multiples vulnérabilités dans Microsoft Edge (11 mai 2026)
De multiples vulnérabilités ont été découvertes dans Microsoft Edge. Elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur.
> Malicious Coding Agent Skills and the Risk of Dynamic Context
Learn how malicious Claude Code skills can abuse dynamic context commands to execute before model-level prompt injection defenses can intervene.
> Multiples vulnérabilités dans les produits Mozilla (11 mai 2026)
De multiples vulnérabilités ont été découvertes dans les produits Mozilla. Elles permettent à un attaquant de provoquer une exécution de code arbitraire et un problème de sécurité non spécifié par l'éditeur.
> Weekly Update 503
Presently sponsored by: Report URI: Guarding you from rogue JavaScript! Don’t get pwned; get real-time alerts & prevent breaches #SecureYourSiteWell, it's the day before the Instructure "pay or leak" deadline (at least by my Aussie watch), and the company remains removed from the ShinyHunters we...
> YARA-X 1.16.0 Release, (Sun, May 10th)
YARA-X&#;x26;#;39;s 1.16.0 release brings 4 improvements and 4 bugfixes.
> Hackers abuse Google ads, Claude.ai chats to push Mac malware
Attackers are abusing Google Ads and legitimate Claude.ai shared chats in an active malvertising campaign. Users searching for "Claude mac download" may come across sponsored search results that list claude.ai as the target website, but lead to instructions that install malware on their Mac. [...]
> Debian DSA-6263-1 libpng1.6 Important Use-After-Free Vulnerability
A use-after-free was discovered in libpng, a library implementing an interface for reading and writing PNG (Portable Network Graphics) files. For the oldstable distribution (bookworm), this problem has been fixed in version 1.6.39-2+deb12u5. For the stable distribution (trixie), this problem has bee...
> Debian DSA-6262-1 lcms2 Important Integer Overflow Advisory
Two integer overflows were discovered in the LittleCMS 2 colour management library. For the oldstable distribution (bookworm), this problem has been fixed in version 2.14-2+deb12u1. For the stable distribution (trixie), this problem has been fixed in
> New cPanel vulnerabilities could allow file access and remote code execution
cPanel fixed three flaws that could allow file reads, code execution, and privilege escalation. No active exploitation has been reported yet. cPanel has released security updates to fix three vulnerabilities affecting cPanel & WHM that could allow attackers to read files, execute code, or escala...
> Police shut down reboot of Crimenetwork marketplace, arrest admin
German authorities have shut down a relaunch version of the criminal marketplace 'Crimenetwork' that generated more than 3.6 million euros, and arrested its operator. [...]
> Ollama Out-of-Bounds Read Vulnerability Allows Remote Process Memory Leak
Cybersecurity researchers have disclosed a critical security vulnerability in Ollama that, if successfully exploited, could allow a remote, unauthenticated attacker to leak its entire process memory. The out-of-bounds read flaw, which likely impacts over 300,000 servers globally, is tracked as CVE-2...
> Official JDownloader site served malware to Windows and Linux users between May 6 and May 7
JDownloader website was hacked to distribute malicious Windows and Linux installers carrying a Python RAT between May 6–7, 2026. JDownloader official website was compromised in a supply chain attack that replaced legitimate Windows and Linux installers with malicious files between May 6 and May 7, 2...
> SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 96
Security Affairs Malware newsletter includes a collection of the best articles and research on malware in the international landscape Malware Newsletter CloudZ RAT potentially steals OTP messages using Pheno plugin   Backdoored PyTorch Lightning package drops credential stealer A rigged game: ScarCr...