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Unrated severityNVD Advisory· Published Jan 13, 2026· Updated Apr 1, 2026

Windows Kernel-Mode Driver Elevation of Privilege Vulnerability

CVE-2026-20859

Description

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

Affected products

4

Microsoft/Windows 11 Version 24H2v5
Range: 10.0.26100.0
Microsoft/Windows 11 Version 25H2v5
Range: 10.0.26200.0
Microsoft/Windows Server 2025v5
Range: 10.0.26100.0
Microsoft/Windows Server 2025 (Server Core installation)v5
Range: 10.0.26100.0

Patches

0

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

1

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20859mitrevendor-advisorypatch

News mentions

0

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