Windows 11 version 26H1 vulnerability

Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.

Published 13 Oct 2026Updated 17 Oct 20261 sources
CVSS 7.0

What happened

Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.

Affected versions

Windows 11 version 26H1: 10.0.28000.0 through before 10.0.28000.3231 (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.