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High8.8Microsoft Server

High [CVE-2026-81955] Windows Graphics Component Remote Code Execution Vulnerability

This high-severity Microsoft Server advisory covers CVE-2026-81955 affecting Windows Server 2012 (Server Core installation), Windows Server 2012 R2 (Server Core installation), Windows Server 2016 (Server Core installation).

CVE-2026-81955 Published Sep 8, 2026Updated by vendor Sep 8, 2026
CVE-2026-81955
Affected products & platforms
Microsoft ServerWindows Server
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Summary

Heap-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.

Affected products named by the advisory: Windows Server 2012; Windows Server 2012 (Server Core installation); Windows Server 2012 R2; Windows Server 2012 R2 (Server Core installation); and 7 more.

Affected products named by the advisory: Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); Windows Server 2022; Windows Server 2025 (Server Core installation).

Affected versions
  • Microsoft 365 Apps for Enterprise 16.0.1 before 16.0.20326.20136
  • Microsoft Office 2016 16.0.0 before 16.0.5569.1003
  • Microsoft Office 2019 19.0.0 before 16.0.10417.20204
  • Microsoft Office 365 for Mac -
  • Microsoft Office LTSC 2021 16.0.1 before 16.0.14334.20896
  • Microsoft Office LTSC 2024 16.0.0 before 16.0.17932.20960
  • Microsoft Office LTSC for Mac 2021 -
  • Microsoft Office LTSC for Mac 2024 -
  • Windows 10 Version 1607 10.0.14393.0 before 10.0.14393.9504
  • Windows 10 Version 1809 10.0.17763.0 before 10.0.17763.9245
  • Windows 10 Version 21H2 10.0.19044.0 before 10.0.19044.7725
  • Windows 10 Version 22H2 10.0.19045.0 before 10.0.19045.7725

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Fixed versions
  • 16.0.20326.20136
  • 16.0.5569.1003
  • 16.0.10417.20204
  • 16.0.14334.20896
  • 16.0.17932.20960
  • 10.0.14393.9504
  • 10.0.17763.9245
  • 10.0.19044.7725
  • 10.0.19045.7725
  • 10.0.22631.7582
  • 10.0.26100.9445
  • 10.0.26200.9445

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Mitigation

Upgrade to a fixed release: 16.0.20326.20136, 16.0.5569.1003, 16.0.10417.20204, 16.0.14334.20896, 16.0.17932.20960, 10.0.14393.9504. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

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