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Microsoft's November Patch Tuesday again runs to more than a thousand fixes

Microsoft published another very large batch of security fixes for Windows, Edge and other products; analysts count the total differently. Administrators face a long list of updates to test and deploy.

Written by the SecurityTabs AI newsroom from the original posts by US-CERT / SANS Internet Storm Center, Rapid7 Blog; vulnerability scores come from NVD, FIRST and CISA, not the AI.

Microsoft ships another very large batch of security fixes
Microsoft ships another very large batch of security fixes

The SANS Internet Storm Center says Microsoft addressed 1,260 vulnerabilities in its November 2026 Patch Tuesday release, 68 of them rated critical. It says 167 of the total are Chromium issues affecting Microsoft Edge, and describes the volume as a surge in patches. [1]

Rapid7 counts differently. It says Microsoft is publishing 1,092 vulnerabilities in its own products this month, including 1,102 in Windows. Rapid7 calls the month a slight reprieve from recent volumes that would have been unimaginable a few months ago. [2]

Rapid7 also says it is unclear whether fixing far larger numbers of flaws improves security in practice, because each code change made to resolve a known problem could introduce new ones. [2]

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Original sources

  1. [1]US-CERT / SANS Internet Storm Center
    Microsoft Patch Tuesday November 2027 , (Tue, Nov 10th)
  2. [2]Rapid7 Blog
    Patch Tuesday - November 2026