Medium severity6.7NVD Advisory· Published Jan 13, 2026· Updated Jul 30, 2026

CVE-2026-20876

Description

Heap-based buffer overflow in Windows Virtualization-Based Security (VBS) Enclave 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 11 24h2cpe-rescue2 versions
10.0.26100.0+ 1 more
- (no CPE)range: 10.0.26100.0
- cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*range: <10.0.26100.7623
Microsoft/Windows 11 25h2cpe-rescue2 versions
10.0.26200.0+ 1 more
- (no CPE)range: 10.0.26200.0
- cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*range: <10.0.26200.7623
Microsoft/Windows Server 2025cpe-rescue2 versions
10.0.26100.0+ 1 more
- (no CPE)range: 10.0.26100.0
- cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*range: <10.0.26100.32230
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 Virtualization-Based Security (VBS) Enclavellm-fuzzy
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