Back to vendor advisories
Microsoft Security Response CenterCVE-2026-45636

Windows NTFS Remote Code Execution Vulnerability

Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.

7.8CVSS out of 10High severity
Scope

What the vendor says is affected

  • Windows Server 2022 (Server Core installation)
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 21H2 for 32-bit Systems
  • Windows 10 Version 21H2 for ARM64-based Systems
  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 21H2 for x64-based Systems
  • Windows Server 2022
  • Windows Server 2019 (Server Core installation)
  • Windows Server 2019
  • Windows 10 Version 22H2 for 32-bit Systems
  • Windows 10 Version 22H2 for ARM64-based Systems
  • Windows 10 Version 22H2 for x64-based Systems
  • Windows Server 2025 (Server Core installation)
  • Windows 11 Version 25H2 for ARM64-based Systems
  • Windows 11 Version 23H2 for ARM64-based Systems
  • Windows 11 Version 23H2 for x64-based Systems
  • Windows 11 Version 24H2 for x64-based Systems
  • Windows Server 2025
  • Windows 11 Version 24H2 for ARM64-based Systems
  • Windows 11 Version 25H2 for x64-based Systems
  • Windows 11 version 26H1 for x64-based Systems
  • Windows 11 Version 26H1 for ARM64-based Systems
  • Windows Server 2016
  • Windows 10 Version 1607 for x64-based Systems

Versions the vendor lists as fixed

  • 10.0.20348.5256
  • 10.0.17763.8880
  • 10.0.19044.7417
  • 10.0.19045.7417
  • 10.0.26100.32995
  • 10.0.26200.8655
  • 10.0.22631.7219
  • 10.0.26100.8655
  • 10.0.28000.2269
  • 10.0.14393.9234
  • 6.3.9600.23228
  • 6.2.9200.26132
Next step

What the vendor recommends

Install KB5094128. Install KB5094123. Install KB5094127. Install KB5094125. Install KB5094126. Install KB5093998. Install KB5095051. Install KB5094122. Install KB5094041. Install KB5094042.

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory