High · 7.0 CVE-2025-54115 EUVD-2025-27305GHSA-vg58-9g8j-fj6x

Windows Hyper-V Elevation of Privilege Vulnerability

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

Vendor: Microsoft Product: Windows 10 Version 1809 Product: Windows 10 Version 21H2 Product: Windows 10 Version 22H2 Product: Windows 11 version 22H2 Product: Windows 11 version 22H3 Product: Windows 11 version 23H2 Product: Windows 11 Version 24H2 Product: Windows Server 2019 Product: Windows Server 2019 (Server Core installation) Product: Windows Server 2022 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 Windows Hyper-V allows an authorized attacker to elevate privileges locally.

Affected products

Vendor	Product	Affected	Fixed
Microsoft	Windows 10 Version 1809	10.0.17763.0 – < 10.0.17763.7792	10.0.17763.7792
Microsoft	Windows 10 Version 21H2	10.0.19044.0 – < 10.0.19044.6332	10.0.19044.6332
Microsoft	Windows 10 Version 22H2	10.0.19045.0 – < 10.0.19045.6332	10.0.19045.6332
Microsoft	Windows 11 version 22H2	10.0.22621.0 – < 10.0.22621.5909	10.0.22621.5909
Microsoft	Windows 11 version 22H3	10.0.22631.0 – < 10.0.22631.5909	10.0.22631.5909
Microsoft	Windows 11 Version 23H2	10.0.22631.0 – < 10.0.22631.5909	10.0.22631.5909
Microsoft	Windows 11 Version 24H2	10.0.26100.0 – < 10.0.26100.6584	10.0.26100.6584
Microsoft	Windows Server 2019	10.0.17763.0 – < 10.0.17763.7792	10.0.17763.7792
Microsoft	Windows Server 2019 (Server Core installation)	10.0.17763.0 – < 10.0.17763.7792	10.0.17763.7792
Microsoft	Windows Server 2022	10.0.20348.0 – < 10.0.20348.4171	10.0.20348.4171
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-2025-54115 Windows Hyper-V Elevation of Privilege Vulnerability Microsoft Security Response Center · Sep 9, 2025

References

Windows Hyper-V Elevation of Privilege Vulnerability vendor-advisory patch