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Story summary
- Anthropic's Claude Opus 4.6 identified 22 vulnerabilities in Mozilla's Firefox during a two-week audit, including 14 high-severity bugs, accounting for 20% of Firefox's high-severity fixes in 2025.
- The AI detected a critical use-after-free vulnerability within 20 minutes.
- Although Claude identified vulnerabilities, it produced only two successful exploits out of hundreds.
- Mozilla has addressed most issues in Firefox 148, with remaining fixes planned, underscoring the need for human oversight in exploit development.
