HIGH 7.8 Microsoft
CVE-2026-20940
Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Microsoft Security Update 2026-Jan: Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
Affected Products
- Windows 10 Version 22H2 for 32-bit Systems
- Windows 11 Version 23H2 for ARM64-based Systems
- Windows 11 Version 23H2 for x64-based Systems
- Windows Server 2019 (Server Core installation)
- Windows 10 Version 21H2 for ARM64-based Systems
- Windows Server 2016
- Windows 10 Version 22H2 for x64-based Systems
- Windows 10 Version 1607 for 32-bit Systems
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20940
- https://nvd.nist.gov/vuln/detail/CVE-2026-20940
This high severity vulnerability with a CVSS score of 7.8 was published on 2026-01-13 via Microsoft. Affected: Windows 10 Version 22H2 for 32-bit Systems, Windows 11 Version 23H2 for ARM64-based Systems, Windows 11 Version 23H2 for x64-based Systems and 5 more.
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