What is CVE-2026-44805?

CVE-2026-44805 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Windows Network Controller (NC) Host Agent Denial of Service Vulnerability

Which CVE IDs does CVE-2026-44805 cover?

CVE-2026-44805 covers the following CVE IDs: CVE-2026-44805. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-44805?

CVE-2026-44805 has a CVSS v3 base score of 5.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-44805?

CVE-2026-44805 affects 6 products, including: Windows Server 2019; Windows Server 2019 (Server Core installation); Windows Server 2022; Windows Server 2022 (Server Core installation); Windows Server 2025; and others — see the full list on the advisory page.

CVE-2026-44805HighCVSS 5.5

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

Vendor

Microsoft Security Response Center (MSRC)

Published

June 10, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-44805 →

📋 Description

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

🎯 Affected products6

Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows Server 2025
Windows Server 2025 (Server Core installation)

✅ Remediation

KB5094123 (Security Update) — fixed build 10.0.17763.8880 KB5094128 (Security Update) — fixed build 10.0.20348.5256 KB5094125 (Security Update) — fixed build 10.0.26100.32995

🔗 References (7)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44805
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5094123
referencehttps://support.microsoft.com/help/5094123
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5094128
referencehttps://support.microsoft.com/help/5094128
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5094125
referencehttps://support.microsoft.com/help/5094125