CVE-2026-54127CWE-416

Windows Hyper-V Elevation of Privilege Vulnerability

High · published July 14, 2026

CVSS v3.1

7.4

EPSS

0%

Percentile

22.0

In the wild

Unconfirmed

What it is

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

The record

Technical detail

CVSS v3.1: 7.4 · HIGH
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS v4.0: Not supplied
EPSS: 0.00305 · 22.0th percentile
Weakness: CWE-416 · Use After Free
Published: 2026-07-14T17:05Z

EPSS history

Timeline

14 JUL 17:05Z
Windows Hyper-V Elevation of Privilege Vulnerability
cvelistv5