Threat Pulse 62High
Anthropic: unreleased Claude model built working exploits for Chrome, Safari, Android and Linux, plus a Windows kernel crash bug
Severity 5ResolvedconfirmedAI and software supply chainAI-related

Anthropic's Frontier Red Team (Oct 27 post) says an unreleased research model found and exploited critical flaws in lab tests: a one-click Chrome sandbox escape, a one-click Safari same-origin bypass, a Pixel 9 lock screen bypass, a zero-click Linux kernel MPTCP root RCE, and a remote Windows kernel QUIC crash (denial of service, not code execution). All were reported to vendors under coordinated disclosure; Chrome's Oct 27 update fixed 52 flaws, many credited to Claude.

What to do: Oct 31: BleepingComputer details the Linux item: CVE-2026-98432, unauthenticated remote root on servers with Multipath TCP listeners; Anthropic researchers built the exploit. No in-the-wild use reported. Patch kernels with MPTCP enabled.

· 9 days ago · anthropic.com
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@TheHackersNewsverifiedOct 28, 08:15 UTC

🛑 An unreleased Anthropic AI model chained security flaws into working exploits across Chrome, Safari, Android, Windows, and Linux. One Chrome exploit escaped the browser sandbox and launched Calculator on a Mac just by loading a page. Details on five chaine

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@The_Cyber_NewsverifiedOct 28, 12:31 UTC

‼️ Claude AI Builds One-Click Chrome and 0-Click Linux Exploit Chains, Bypasses Android Lock Screen Details: https://cybersecuritynews.com/claude-ai-builds-exploit/ Anthropic's Frontier Red Team says an unreleased Claude research model wrote working exploit

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@TheHackersNewsverifiedOct 28, 05:08 UTC

🚨 Google patches 52 Chrome security flaws, including 4 CRITICAL bugs. But here's the bigger story: → Claude AI discovered dozens of Chrome vulnerabilities. → Built a working, multi-stage exploit chain. → Escaped Chrome's browser sandbox to execute code. Det

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@BleepinComputerverifiedOct 30, 21:41 UTC

Security researchers at Anthropic have developed an exploit for a critical Linux kernel vulnerability that allows unauthenticated attackers to remotely execute commands as root on servers running Multipath TCP (MPTCP) listeners.

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Why this score

Plan rubric with caps (verified sweep, Oct 29)

Updated Nov 5, 01:44 UTC. Refreshes on its own.

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