CVE-2026-20808

Microsoft · Published January 13, 2026

7.0

CVSS v3.1

HIGH

Patch availableGet patch

Description

Windows File Explorer Elevation of Privilege Vulnerability. Concurrent execution using shared resource with improper synchronization ('race condition') in Printer Association Object allows an authorized attacker to elevate privileges locally.

Affected Products

Windows Server 2025 (Server Core installation)
Windows 11 Version 25H2 for ARM64-based Systems
Windows 11 Version 25H2 for x64-based Systems
Windows Server 2022, 23H2 Edition (Server Core installation)

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C