Microsoft builds AI security system 'MDASH' and uses it to detect Windows vulnerabilities

Microsoft introduced MDASH, an agentic multi-model AI security pipeline designed to find, validate, deduplicate, and prove vulnerabilities.

In testing, it found all 21 expected flaws in a sample driver and rediscovered 16 Windows vulnerabilities later patched on May 12, 2026.

Microsoft said MDASH achieved a 96% rediscovery rate across past cases, suggesting AI can now support real-scale vulnerability discovery in Microsoft software.