Microsoft Patches Over 900 Vulnerabilities with September Update

Microsoft has released its September 2026 Patch, fixing over 900 software vulnerabilities across its ecosystem. This update marks an acceleration in software remediation, with Microsoft addressing a then-unprecedented 570 flaws just two months earlier.

The patch resolves 972 software vulnerabilities, including 112 critical-severity classification issues. Dustin Childs, a cybersecurity researcher, described the flood of monthly security disclosures as the industry's inevitable 'new normal'.

Microsoft has resolved 2,760 security flaws so far in 2026, more than twice the total recorded at this stage last year. The tech giant is on track to resolve more security bugs in 2026 than it did across 2023, 2024, and 2025 combined.