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

CVE-2026-20811

Description

Access of resource using incompatible type ('type confusion') in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.

Microsoft/Windows 11 23h22 versions
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*range: <10.0.22631.6491
- (no CPE)range: 10.0.22631.0
Microsoft/Windows 11 24h22 versions
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*range: <10.0.26100.7623
- (no CPE)range: 10.0.26100.0
Microsoft/Windows 11 25h22 versions
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*range: <10.0.26200.7623
- (no CPE)range: 10.0.26200.0
Microsoft/Windows Server 20032 versions
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*range: <10.0.20348.4648
- (no CPE)range: 10.0.20348.0
Microsoft/Windows Server 2012
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:*
Range: <10.0.25398.2092
Microsoft/Windows Server 20252 versions
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*range: <10.0.26100.32230
- (no CPE)range: 10.0.26100.0
Microsoft/Windows Win32Kllm-fuzzy
Microsoft/Windows 10 version 1607cpe-rescue
Range: 10.0.22631.0
Microsoft/Windows Server 2022, 23H2 Edition (Server Core installation)v5
Range: 10.0.25398.0
Microsoft/Windows Server 2025 (Server Core installation)v5
Range: 10.0.26100.0