CVE-2025-54105

Microsoft Brokering File System Elevation of Privilege Vulnerability

State: Published
Severity: 7.0 High
Published: Sep 9, 2025
Updated: Feb 26, 2026
Reserved: Jul 16, 2025

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.

Scores

CVSS	Score	Vector	Source
3.1	7.0 High	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	microsoft

Weaknesses

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-416 Use After Free

Affected Products

Product	Versions
Windows 11 Version 24H2Microsoft	10.0.26100.0 to before 10.0.26100.6584Affected
Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft	10.0.25398.0 to before 10.0.25398.1849Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.6584Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.6584Affected

References

Microsoft Brokering File System Elevation of Privilege Vulnerabilityvendor-advisorypatch

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