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Security · High impactFan score 65 · Tier A8 sources

Microsoft fixes over 1,000 vulnerabilities in November Patch Tuesday

CyberScoop · By Greg Otto ·

The Brief · written from 8 sources

  • Microsoft's November 2026 Patch Tuesday fixed more than 1,000 flaws; source counts vary from 1,093 (The Record) to 1,260 (SANS).
  • Microsoft says it is aware of active exploitation of Outlook zero-day CVE-2026-124194.
  • SANS reports 68 of the vulnerabilities are critical and 167 are Chromium issues affecting Microsoft Edge.
  • Windows 10 extended security update KB5131096 includes the November 2026 fixes plus a few bug fixes and changes.

Why it matters

The exploited Outlook zero-day makes this update a priority for anyone running Outlook. The sheer volume of fixes also means teams need to plan testing and deployment for a large patch batch.

Who’s affected

  • Organisations running Microsoft Outlook
  • Windows 10 systems receiving extended security updates
  • Microsoft Edge users

What to do

  1. Install the November 2026 Patch Tuesday updates, prioritising the Outlook fix for CVE-2026-124194
  2. Windows 10 systems enrolled in extended security updates can install KB5131096

Microsoft’s November security update addresses roughly 1,090 vulnerabilities across Windows, Office, Azure and the company’s other product lines, the second consecutive monthly release to exceed the totals of all previous years. The release formally lists 1,094 CVEs, with Windows…

Read the full story at cyberscoop.com ↗

Timeline

  1. Microsoft releases November 2026 Patch Tuesday fixes, including exploited Outlook zero-day

  2. Windows 10 KB5131096 extended security update released

  3. BleepingComputer

    Microsoft November 2026 Patch Tuesday fixes 1,235 flaws, Outlook zero-day

  4. SANS Internet Storm Center, InfoCON: green

    Microsoft Patch Tuesday November 2027 , (Tue, Nov 10th)

  5. SecurityWeek

    Exploited Outlook Zero-Day Among 1,094 Flaws Patched by Microsoft

  6. BleepingComputer

    Microsoft releases Windows 10 KB5131096 extended security update

  7. The Record from Recorded Future News

    Microsoft’s Patch Tuesday surpasses 1,000 bugs for second month in a row

  8. CyberScoop

    Microsoft fixes over 1,000 vulnerabilities in November Patch Tuesday

  9. Krebs on Security

    Microsoft Fixes Nearly 1,100 Security Vulnerabilities

  10. darkreading

    November Patch Tuesday: An Overflowing Cornucopia of CVEs

Full coverage · 8 sources

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    Microsoft fixes over 1,000 vulnerabilities in November Patch Tuesday – The Morning Dev