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CVE-2026-44805: Windows Network Controller (NC) Host Agent Denial of Service Vulnerability

mediumCVSS 5.5CVE-2026-44805
Use after free in Windows Network Controller (NC) Host Agent allows an authorized attacker to deny service locally.

CSIRTS triage

vendor: Microsoftproduct: Windows Network ControllerDenial of service
What
A use-after-free vulnerability allows denial of service.
Who is affected
Authorized users of Windows Network Controller.
Urgency
Remediation is important due to the medium severity rating.
Action
Apply the security update to mitigate the vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
medium — CVSS 5.5
Published
2026-06-09
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44805

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-44805coverage & exploitation statusNVD · CVE.org

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