Windows 10 v21H1 - HTTP Protocol Stack Remote Code Execution

Windows 10 v21H1 - HTTP Protocol Stack Remote Code Execution

Published 5 Sep 2026Updated 5 Sep 202645 sources
CVSS 10.0 ✓ VERIFIED REFERENCE

What happened

CVE-2022-21907: RCE in Windows http.sys IIS module causing DoS via payload upload.

Affected versions

Unknown product: See original advisory Fixed: See vendor advisory.

Why it matters

This source correlation may provide earlier visibility while structured CVE metadata is still being updated.

Detection & mitigation

  • Review the original advisory and validate affected versions.
  • Apply vendor-provided updates or mitigations when available.

Public PoC references