Windows 11 version 23H2 vulnerability

Use after free in Windows SmartScreen allows an authorized attacker to elevate privileges locally.

Published 13 Oct 2026Updated 17 Oct 20261 sources
CVSS 7.8

What happened

Use after free in Windows SmartScreen allows an authorized attacker to elevate privileges locally.

Affected versions

Windows 11 version 23H2: 10.0.22631.0 through before 10.0.22631.7652 (custom); 10.0.26100.0 through before 10.0.26100.9711 (custom); 10.0.26200.0 through before 10.0.26200.9711 (custom); 10.0.28000.0 through before 10.0.28000.3231 (custom); 10.0.26300.0 through before 10.0.26300.9711 (custom); 10.0.26100.0 through before 10.0.26100.33650 (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.