Claude Mythos Identifies Thousands of Zero-Day Vulnerabilities
Date: 2026-03
Affected: OS, browsers (cross-vendor)
Attack vector: other
Category: research
Severity: High

Anthropic's Claude Mythos preview identified 'thousands of zero-day vulnerabilities' across major operating systems and web browsers, some unpatched for decades. Anthropic launched coordinated vulnerability disclosure for findings.


Mitigations:

Architectural layers (MAESTRO):