Microsoft released an emergency out-of-band patch (KB5129194) on September 14 for Windows 11 after its September 8 Patch Tuesday update—which fixed 966 flaws including two actively exploited zero-days—caused issues with Remote Desktop Services, USB audio devices, and Hyper-V applications. The new patch addresses several introduced problems and includes additional security updates, though some USB audio compatibility issues remain unresolved.
Microsoft released 974 security patches in September, its largest single batch ever, with 113 critical flaws including two actively exploited zero-days. AI-assisted vulnerability discovery is accelerating patch volumes across major software vendors, but security experts warn organizations struggle to test and deploy fixes at this scale.