CVE-2025-62567

Windows Hyper-V Denial of Service Vulnerability

State: Published
Severity: 5.3 Medium
Published: Dec 9, 2025
Updated: Apr 16, 2026
Reserved: Oct 15, 2025

Description

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

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-191 Integer Underflow (Wrap or Wraparound)

Affected Products

Product	Versions
Windows 10 Version 1607Microsoft	10.0.14393.0 to before 10.0.14393.8688Affected
Windows 10 Version 1809Microsoft	10.0.17763.0 to before 10.0.17763.8146Affected
Windows 10 Version 21H2Microsoft	10.0.19044.0 to before 10.0.19044.6691Affected
Windows 10 Version 22H2Microsoft	10.0.19045.0 to before 10.0.19045.6691Affected
Windows 11 version 22H3Microsoft	10.0.22631.0 to before 10.0.22631.6345Affected
Windows 11 Version 23H2Microsoft	10.0.22631.0 to before 10.0.22631.6345Affected
Windows 11 Version 24H2Microsoft	10.0.26100.0 to before 10.0.26100.7462Affected
Windows 11 Version 25H2Microsoft	10.0.26200.0 to before 10.0.26200.7462Affected
Windows Server 2012 R2Microsoft	6.3.9600.0 to before 6.3.9600.22920Affected
Windows Server 2012 R2 (Server Core installation)Microsoft	6.3.9600.0 to before 6.3.9600.22920Affected
Windows Server 2016Microsoft	10.0.14393.0 to before 10.0.14393.8688Affected
Windows Server 2016 (Server Core installation)Microsoft	10.0.14393.0 to before 10.0.14393.8688Affected
Windows Server 2019Microsoft	10.0.17763.0 to before 10.0.17763.8146Affected
Windows Server 2019 (Server Core installation)Microsoft	10.0.17763.0 to before 10.0.17763.8146Affected
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.4529Affected
Windows Server 2022, 23H2 Edition (Server Core installation)Microsoft	10.0.25398.0 to before 10.0.25398.2025Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.7462Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.7462Affected

References

Windows Hyper-V Denial of Service Vulnerabilityvendor-advisorypatch

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