Cyber Security News Bulletin Weekly

https://cybersecuritynews.com/cyber-security-news-bulletin-weekly/

Publish Date: 2026-07-05 10:10:00

This week’s roundup covers a major AI security model redeployment, several critical RCE vulnerabilities across popular tools, a landmark WhatsApp privacy update, and the latest Kali Linux release.

Anthropic Confirms Claude Mythos 5 Redeployment

Anthropic’s most powerful AI cybersecurity model Claude Mythos 5 is being restored to vetted US critical infrastructure organizations after a government-led suspension that began June 12, 2026.

The model demonstrated an unprecedented 72% success rate generating working exploits on the first attempt, discovered vulnerabilities spanning a 27-year-old OpenBSD flaw and a 16-year-old FFmpeg bug, and autonomously chained Linux kernel exploits achieving full privilege escalation.

The US government officially cleared redeployment on June 27 for organizations in energy, healthcare, financial services, and telecom — while work continues toward a broader rollout including Claude Fable 5. Read More

Chrome 151 Patches 382 Vulnerabilities

Google’s Chrome 151 stable update delivers patches for 382 security vulnerabilities, with 15 classified as critical, mostly “use after free” bugs in Extensions, GPU, WebUSB, Bluetooth, and Chromoting components. Exploiting these flaws could enable drive-by code execution. Users on Windows, macOS, Linux, and iOS should update immediately. Read More

“Bad Epoll” 0-Day Gives Root Access on Linux & Android Devices

A race condition and use-after-free in the Linux kernel’s epoll subsystem allows unprivileged local users to escalate to root with ~99% reliability. Dubbed Bad Epoll, the flaw targets servers, desktops, and Android. Since epoll cannot be disabled, the only mitigation is applying the upstream kernel patch immediately. Read More