CVE-2026-40402

CVSS Score & Metrics

Base Score

9.3 / 10

Vector String

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

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

Published Date

May 12, 2026

Last Modified

May 15, 2026

CWE ID

CWE-416

Source

NVD

Vendor

microsoft

Product

windows_11_23h2