CVE-2026-40402 - Vulnerability Analysis
CriticalCVSS: 9.3Last Updated: May 12, 2026
Windows Hyper-V - Privilege Escalation
Published: May 12, 2026Updated: May 12, 2026
Overview
Windows Hyper-V contains a use after free vulnerability allowing unauthorized local attackers to elevate privileges by exploiting memory corruption.
Severity & Score
Severity: Critical
CVSS Score: 9.3
Impact
Local attackers can elevate privileges, gaining higher access on the system.
Mitigation
Update to the latest Windows Hyper-V version with security patches.
Related Resources
Details
- CVE ID
- CVE-2026-40402
- Severity
- Critical
- CVSS Score
- 9.3
- Type
- use_after_free
- Status
- new
CWE
- CWE-416
CVSS Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H