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OpenAdvisories
High · 7.8 CVE-2026-20859 EUVD-2026-2168GHSA-fhp4-cg6g-8v4w

Windows Kernel-Mode Driver Elevation of Privilege Vulnerability

Published Jan 13, 2026 · Updated Jul 30, 2026 · Assigned by microsoft

Description

Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

Affected products

VendorProductAffectedFixed
Microsoft Windows 11 Version 24H2 10.0.26100.0 – < 10.0.26100.7623 10.0.26100.7623
Microsoft Windows 11 Version 25H2 10.0.26200.0 – < 10.0.26200.7623 10.0.26200.7623
Microsoft Windows Server 2025 10.0.26100.0 – < 10.0.26100.32230 10.0.26100.32230
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 – < 10.0.26100.32230 10.0.26100.32230

Advisories 3

References