CVE-2026-34331CWE-362CWE-416

Win32k Elevation of Privilege Vulnerability

High · published May 12, 2026

CVSS v3.1
7.0
EPSS
0%
Percentile
9.6
In the wild
Unconfirmed
What it is

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.

The record
Technical detail
CVSS v3.1
7.0 · HIGH
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00202 · 9.6th percentile
Weaknesses
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'); CWE-416 · Use After Free
Published
2026-05-12T16:58Z
EPSS history
Timeline
  • 12 MAY 16:58Z
    Win32k Elevation of Privilege Vulnerability
    cvelistv5