High severity7.8NVD Advisory· Published Jan 13, 2026· Updated Jul 30, 2026

CVE-2026-20920

Description

Use after free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.

Microsoft/Windows 11 23h2cpe-rescue2 versions
10.0.22631.0+ 1 more
- (no CPE)range: 10.0.22631.0
- cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*range: <10.0.22631.6491
Microsoft/Windows Server 2003cpe-rescue2 versions
10.0.20348.0+ 1 more
- (no CPE)range: 10.0.20348.0
- cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*range: <10.0.20348.4648
Microsoft/Windows Server 2012
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*
Range: <10.0.25398.2092
Microsoft/Windows 10 version 1607cpe-rescue
Range: 10.0.22631.0
Microsoft/Windows Win32Kllm-fuzzy
Microsoft/Windows Server 2022, 23H2 Edition (Server Core installation)v5
Range: 10.0.25398.0

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