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CVE-2026-44805

5.5 · MEDIUM

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

Published Jun 9, 2026microsoftCWE-416EPSS 0.36%

Overview

CVE-2026-44805 is a medium-severity vulnerability affecting microsoft windows_server_2019. It was published on June 9, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

Remediation

Check the references section for vendor advisories and patches from microsoft. Update windows_server_2019 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
microsoftwindows_server_2019>= 0, < 10.0.17763.8880Affected
microsoftwindows_server_2022>= 0, < 10.0.20348.5256Affected
microsoftwindows_server_2025>= 0, < 10.0.26100.32995Affected

References

Refmsrc.microsoft.com/update-guide/vulnerability/CVE-2026-44805

How CyberStrike helps

Frequently asked questions

What is CVE-2026-44805?

CVE-2026-44805 is a medium-severity vulnerability affecting microsoft windows_server_2019. It was published on June 9, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-44805?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-44805?

Check the references section for vendor advisories and patches from microsoft. Update windows_server_2019 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-44805?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-44805 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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