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CVE-2026-40402
Published: May 12, 2026
Modified: Jun 5, 2026
PUBLISHED
CVSS v3.1
9.3
CRITICAL
Description
Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.
| Vendor | Product | Versions |
|---|---|---|
Microsoft | Windows 11 version 23H2 | affected 10.0.22631.0 - < 10.0.22631.7079 |
Microsoft | Windows 11 Version 23H2 | affected 10.0.22631.0 - < 10.0.22631.7079 |
Microsoft | Windows Server 2022 | affected 10.0.20348.0 - < 10.0.20348.5139 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
References
Windows Hyper-V Elevation of Privilege Vulnerability
vendor-advisory
patch
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