Mythos has a 72.4% success rate on writing a successful exploit when given a vulnerability.
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1
Videos
90%
Confidence
4/10/2026
First Seen
4/10/2026
Last Seen
Source Videos (1)
We Need To Talk About Claude Mythos
Low Level
2:12
Related Claims
Mythos autonomously wrote a remote code execution exploit on FreeBSD's NFS server that gained full root access by splitting a chain over 20 packets.
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The earlier Mythos preview version developed a moderately sophisticated multi-step exploit to gain broad internet access from a system meant to be restricted.
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FFmpeg acknowledged a patch for a vulnerability found by Mythos.
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The Mythos AI model is able to find zero-day vulnerabilities almost completely on its own with almost no guidance from a human.
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Anthropic's testing found that Mythos Preview can identify and exploit zero-day vulnerabilities in every major operating system and web browser when directed by a user.
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