CVE-2026-44805

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

CVE-2026-44805 is fixed in 6 products on 1 platform, first by KB5094123, released June 9, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

5.5

Important

Exploitation

None reported

Exploitation Unlikely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0036

29th percentile

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

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows Server 2019	17763.8880	KB5094123	Jun 9, 2026
Windows Server 2019 (Server Core installation)	17763.8880	KB5094123	Jun 9, 2026
Windows Server 2022	20348.5256	KB5094128	Jun 9, 2026
Windows Server 2022 (Server Core installation)	20348.5256	KB5094128	Jun 9, 2026
Windows Server 2025	26100.32995	KB5094125	Jun 9, 2026
Windows Server 2025 (Server Core installation)	26100.32995	KB5094125	Jun 9, 2026

Details

Published
June 9, 2026
Weakness
Use After Free
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44805

For tools and AI agents

This page as data: JSON · Markdown

Link to this page

If this page saved you time, a link to it in your ticket, advisory or write-up helps others find it.

HTML

<a href="https://patchblox.com/security/cve/CVE-2026-44805">CVE-2026-44805 on Patchblox Patch Radar</a>

Reusing the data? How to credit Patch Radar.

Is this on your machines?

Patchblox finds every install below the fixed version on Windows, macOS and Linux, and updates them through your release rings.

Get a demo

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.