CVE-2026-40402

9.3 criticalEPSS 0.3%

Critical (9.3) in microsoft. EPSS 0.3% chance of exploitation in the next 30 days.

Use after free in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.

Severity

9.3 critical

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 26% of CVEs (scores of 2026-10-31)
CWE: CWE-416
Published: 2026-05-12
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19