CRITICALCVE-2026-40402Published Modified CNA microsoft
CVE-2026-40402: Windows Hyper-V Elevation of Privilege Vulnerability
Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.
Metrics
- CVSS v3.1
- 9.3
- Severity
- CRITICAL
- Fixed in
- 10.0.20348.5139
- Affected Products
- 3
Fix available
10.0.20348.513910.0.22631.7079
Patch commits
Affected packages
- Microsoft / Windows 11 version 22H3< 10.0.22631.7079 (from 10.0.22631.0)
- Microsoft / Windows 11 Version 23H2< 10.0.22631.7079 (from 10.0.22631.0)
- Microsoft / Windows Server 2022< 10.0.20348.5139 (from 10.0.20348.0)
CVSS 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