CVE-2026-45607

Windows Hyper-V Remote Code Execution Vulnerability

State: Published
Severity: 8.4 High
Published: Jun 9, 2026
Updated: Sep 24, 2026
Reserved: May 12, 2026

Description

Out-of-bounds read in Windows Hyper-V allows an unauthorized attacker to execute code locally.

Scores

CVSS	Score	Vector	Source
3.1	8.4 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
Windows 10 Version 1607Microsoft	10.0.14393.0 to before 10.0.14393.9234Affected
Windows 10 Version 1809Microsoft	10.0.17763.0 to before 10.0.17763.8880Affected
Windows 10 Version 21H2Microsoft	10.0.19044.0 to before 10.0.19044.7417Affected
Windows 10 Version 22H2Microsoft	10.0.19045.0 to before 10.0.19045.7417Affected
Windows 11 version 23H2Microsoft	10.0.22631.0 to before 10.0.22631.7219Affected
Windows 11 Version 23H2Microsoft	10.0.22631.0 to before 10.0.22631.7219Affected
Windows 11 Version 24H2Microsoft	10.0.26100.0 to before 10.0.26100.8655Affected
Windows 11 Version 25H2Microsoft	10.0.26200.0 to before 10.0.26200.8655Affected
Windows 11 version 26H1Microsoft	10.0.28000.0 to before 10.0.28000.2269Affected
Windows Server 2016Microsoft	10.0.14393.0 to before 10.0.14393.9234Affected
Windows Server 2016 (Server Core installation)Microsoft	10.0.14393.0 to before 10.0.14393.9234Affected
Windows Server 2019Microsoft	10.0.17763.0 to before 10.0.17763.8880Affected
Windows Server 2019 (Server Core installation)Microsoft	10.0.17763.0 to before 10.0.17763.8880Affected
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.5256Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.32995Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.32995Affected

References

Windows Hyper-V Remote Code Execution Vulnerabilityvendor-advisorypatch

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