Microsoft HTTP Protocol Stack Remote Code Execution Vulnerability

Microsoft HTTP Protocol Stack contains a vulnerability in http.sys that allows for remote code execution.

Published 9 Sep 2026Updated 9 Sep 20264 sources
CVSS 9.8 PoC CANDIDATE△ CISA KEV

What happened

Microsoft HTTP Protocol Stack contains a vulnerability in http.sys that allows for remote code execution.

Affected versions

HTTP Protocol Stack: 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