CVE-2025-55687

Microsoft · Published October 14, 2025

7.4

CVSS v3.1

HIGH

Patch availableGet patch

Description

Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability. Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Resilient File System (ReFS) allows an unauthorized attacker to elevate privileges locally.

Affected Products

Windows 11 Version 25H2 for x64-based Systems
Windows 11 Version 25H2 for ARM64-based Systems
Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1809 for x64-based Systems

CVSS Vector

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