AI developer toolsBriefConfirmed by two or more outlets
Mythos-era exploitation statistics
VulnCheck/Berkeley: 14 of 1,061 (1.3%) AI-model-found vulnerabilities were exploited in the wild (Jul 2026).
- Disclosed
What happened
- Firefox 150 fixed 271 bugs from the Mythos evaluation. Critics note that few were credited as zero-days.
Sources
- https://securityboulevard.com/2026/07/ai-discovered-security-flaws-are-not-yet-translating-into-more-exploitation/
- https://www.schneier.com/blog/archives/2026/04/claude-mythos-has-found-271-zero-days-in-firefox.html
- https://www.helpnetsecurity.com/2026/04/08/anthropic-claude-mythos-preview-identify-vulnerabilities/
This is a brief: a short, sourced summary from our incident tracking. Full advisories add commands to check whether you are affected.