Windows Network Controller (NC) Host Agent Denial of Service Vulnerability

HighVendor CVSS 5.5 / 10 1 CVE Published Jun 9, 2026 at 7:00 AM UTC

Summary

Use after free in Windows Network Controller (NC) Host Agent allows an authorized attacker to deny service locally.

Install KB5094123. Install KB5094128. Install KB5094125.

Jun 9, 2026 at 7:00 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Sep 28, 2026 at 11:20 AM UTC
Added to SecurityAlert
We collected the advisory from the official source.
Nov 11, 2026 at 2:20 AM UTC
Confirmed at the source
Our collector saw this advisory during a later source check.

Details collected from Microsoft Security Response Center.

Official bulletin How SecurityAlert builds this record

Your environment

A vendor advisory can tell you what may be affected. It cannot tell you whether that product and version are installed in your environment.

Watch Windows Server

Keep following

Use the vendor-specific RSS feed or set up alerts for a product your team relies on.

Follow this vendor's RSS feed