Anthropic's Mythos Preview Tool Accelerates Exploit Development for N-Day Vulnerabilities

Anthropic’s Mythos Preview tool can develop functional exploits for newly disclosed software vulnerabilities within hours, significantly accelerating a process that previously required days or weeks. The research focuses on N-day vulnerabilities—flaws that have been publicly disclosed and patched but remain unaddressed on unpatched systems—rather than zero-days. Anthropic’s study highlights that N-days may pose greater risks due to the availability of patches that are often not applied. The tool’s capabilities were demonstrated in the context of undisclosed vulnerabilities affecting software like Firefox and Windows. No specific CVE IDs, technical exploit details, or exact dates were provided in the report.