CVE Watchtower ← Back to CVE ListCVE-2026-40402NVDDescriptionUse after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.Severity LevelCRITICAL (9.3)Published Date12/05/2026Last Modified15/05/2026Exploitation Status????Referenceshttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40402