Virtual Hard Disk (VHD) Miniport Driver Remote Code Execution Vulnerability
CVE-2026-81355
Scope
What the vendor says is affected
- Windows 10 Version 1809 for 32-bit Systems
- Windows 10 Version 1809 for x64-based Systems
- Windows Server 2019
- Windows Server 2019 (Server Core installation)
- Windows Server 2022
- Windows Server 2022 (Server Core installation)
- Windows 10 Version 21H2 for 32-bit Systems
- Windows 10 Version 21H2 for ARM64-based Systems
- Windows 10 Version 21H2 for x64-based Systems
- Windows 10 Version 22H2 for x64-based Systems
- Windows 10 Version 22H2 for ARM64-based Systems
- Windows 10 Version 22H2 for 32-bit Systems
- Windows Server 2025 (Server Core installation)
- Windows 11 Version 25H2 for ARM64-based Systems
- Windows 11 Version 25H2 for x64-based Systems
- Windows 11 Version 23H2 for ARM64-based Systems
- Windows 11 Version 23H2 for x64-based Systems
- Windows 11 Version 24H2 for ARM64-based Systems
- Windows 11 Version 24H2 for x64-based Systems
- Windows Server 2025
- Windows 11 version 26H1 for x64-based Systems
- Windows 11 Version 26H1 for ARM64-based Systems
- Windows 10 Version 1607 for 32-bit Systems
- Windows 10 Version 1607 for x64-based Systems
Versions the vendor lists as fixed
- 10.0.17763.9245
- 10.0.20348.5622
- 10.0.19044.7725
- 10.0.19045.7725
- 10.0.26100.33438
- 10.0.26200.9445
- 10.0.22631.7582
- 10.0.26100.9445
- 10.0.28000.2954
- 10.0.14393.9512
- 6.3.9600.23397
Next step
What the vendor recommends
Install KB5122876. Install KB5122882. Install KB5122878. Install KB5122871. Install KB5124008. Install KB5122880. Install KB5124012. Install KB5123099. Install KB5123066.
Review the complete instructions on the vendor's siteUpdate history
What changed in later vendor updates
SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.
- Added affected products: Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows 11 Version 23H2 for....
- Added fixed versions: 6.3.9600.23397, 10.0.14393.9512, 10.0.17763.9245, 10.0.20348.5622, 10.0.22631.7582.
- The vendor changed its remediation guidance.
Timeline
When this advisory changed
- Published by Microsoft Security Response Center
The publication date reported by the vendor.
- Added to SecurityAlert
We collected the advisory from the official source.
- Confirmed at the source
Our collector saw this advisory during a later source check.
Vulnerabilities