Medium · 5.3 CVE-2025-62567 EUVD-2025-202211GHSA-ccfp-87cw-c3rx

Windows Hyper-V Denial of Service Vulnerability

Published Dec 9, 2025 · Updated Apr 16, 2026 · Assigned by microsoft

Vendor: Microsoft Product: Windows 10 Version 1607 Product: Windows 10 Version 1809 Product: Windows 10 Version 21H2 Product: Windows 10 Version 22H2 Product: Windows 11 version 22H3 Product: Windows 11 version 23H2 Product: Windows 11 Version 24H2 Product: Windows 11 Version 25H2 Product: Windows Server 2012 R2 Product: Windows Server 2012 R2 (Server Core installation) Product: Windows Server 2016 Product: Windows Server 2016 (Server Core installation) 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

Integer underflow (wrap or wraparound) in Windows Hyper-V allows an authorized attacker to deny service over a network.

Affected products

Vendor	Product	Affected	Fixed
Microsoft	Windows 10 Version 1607	10.0.14393.0 – < 10.0.14393.8688	10.0.14393.8688
Microsoft	Windows 10 Version 1809	10.0.17763.0 – < 10.0.17763.8146	10.0.17763.8146
Microsoft	Windows 10 Version 21H2	10.0.19044.0 – < 10.0.19044.6691	10.0.19044.6691
Microsoft	Windows 10 Version 22H2	10.0.19045.0 – < 10.0.19045.6691	10.0.19045.6691
Microsoft	Windows 11 version 22H3	10.0.22631.0 – < 10.0.22631.6345	10.0.22631.6345
Microsoft	Windows 11 Version 23H2	10.0.22631.0 – < 10.0.22631.6345	10.0.22631.6345
Microsoft	Windows 11 Version 24H2	10.0.26100.0 – < 10.0.26100.7462	10.0.26100.7462
Microsoft	Windows 11 Version 25H2	10.0.26200.0 – < 10.0.26200.7462	10.0.26200.7462
Microsoft	Windows Server 2012 R2	6.3.9600.0 – < 6.3.9600.22920	6.3.9600.22920
Microsoft	Windows Server 2012 R2 (Server Core installation)	6.3.9600.0 – < 6.3.9600.22920	6.3.9600.22920
Microsoft	Windows Server 2016	10.0.14393.0 – < 10.0.14393.8688	10.0.14393.8688
Microsoft	Windows Server 2016 (Server Core installation)	10.0.14393.0 – < 10.0.14393.8688	10.0.14393.8688
Microsoft	Windows Server 2019	10.0.17763.0 – < 10.0.17763.8146	10.0.17763.8146
Microsoft	Windows Server 2019 (Server Core installation)	10.0.17763.0 – < 10.0.17763.8146	10.0.17763.8146
Microsoft	Windows Server 2022	10.0.20348.0 – < 10.0.20348.4529	10.0.20348.4529
Microsoft	Windows Server 2022, 23H2 Edition (Server Core installation)	10.0.25398.0 – < 10.0.25398.2025	10.0.25398.2025
Microsoft	Windows Server 2025	10.0.26100.0 – < 10.0.26100.7462	10.0.26100.7462
Microsoft	Windows Server 2025 (Server Core installation)	10.0.26100.0 – < 10.0.26100.7462	10.0.26100.7462

Advisories 3

WID-SEC-2025-2781 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 19, 2026
NCSC-2025-0383 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Dec 9, 2025
MSRC-CVE-2025-62567 Windows Hyper-V Denial of Service Vulnerability Microsoft Security Response Center · Dec 9, 2025

References

Windows Hyper-V Denial of Service Vulnerability vendor-advisory patch