32 Bipartisan House Members Urge White House on AI Cybersecurity Threats, Citing Thousands of Zero-Day Vulnerabilities

According to Axios, on May 14, 32 bipartisan House members sent a letter to U.S. National Cyber Director Sean Cairncross urging immediate action against AI-generated cybersecurity threats. The letter highlights that advanced AI systems like Mythos and GPT-5.5 Cyber have uncovered thousands of critical zero-day vulnerabilities across mainstream operating systems and web browsers—some undetected despite years of human review and automated testing.

The lawmakers expressed concern that "AI can discover massive volumes of severe vulnerabilities, but corresponding disclosure, verification, patching, and deployment efforts may struggle to keep pace." The letter proposes seven recommendations, including coordinating large-scale vulnerability disclosures and expanding trusted access to advanced cyber models. The White House Cyber Office is required to hold a staff-level briefing within 30 days and submit a written response within 45 days outlining the government's response plan.