High · 7.0 CVE-2025-54105 EUVD-2025-27312GHSA-3x36-37r9-m92p

Microsoft Brokering File System Elevation of Privilege Vulnerability

Published Sep 9, 2025 · Updated Feb 26, 2026 · Assigned by microsoft

Vendor: Microsoft Product: Windows 11 Version 24H2 Product: Windows Server 2022, 23H2 Edition (Server Core installation) Product: Windows Server 2025 Product: Windows Server 2025 (Server Core installation) Platform: Windows

Description

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

Affected products

Vendor	Product	Affected	Fixed
Microsoft	Windows 11 Version 24H2	10.0.26100.0 – < 10.0.26100.6584	10.0.26100.6584
Microsoft	Windows Server 2022, 23H2 Edition (Server Core installation)	10.0.25398.0 – < 10.0.25398.1849	10.0.25398.1849
Microsoft	Windows Server 2025	10.0.26100.0 – < 10.0.26100.6584	10.0.26100.6584
Microsoft	Windows Server 2025 (Server Core installation)	10.0.26100.0 – < 10.0.26100.6584	10.0.26100.6584

Advisories 3

WID-SEC-2025-2005 Microsoft Windows und Windows Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 11, 2025
NCSC-2025-0277 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Sep 9, 2025
MSRC-CVE-2025-54105 Microsoft Brokering File System Elevation of Privilege Vulnerability Microsoft Security Response Center · Sep 9, 2025

References

Microsoft Brokering File System Elevation of Privilege Vulnerability vendor-advisory patch