Windows 11 version 23H2 vulnerability

Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges over a network.

Published 8 Sep 2026Updated 10 Sep 20261 sources
CVSS 7.1

What happened

Use after free in Windows DWM Core Library allows an authorized attacker to elevate privileges over a network.

Affected versions

Windows 11 version 23H2: 10.0.22631.0 through before 10.0.22631.7582 (custom); 10.0.26100.0 through before 10.0.26100.33438 (custom) Fixed: See vendor advisory.

Why it matters

Review the vendor advisory and exposure of the affected product to determine operational impact.

Detection & mitigation

  • Apply vendor-provided updates or mitigations.
  • Review affected product exposure and access logs.

Public PoC references

No public PoC reference has passed the current publication threshold.