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CVE-2026-50444: Windows Server Update Service (WSUS) Elevation of Privilege Vulnerability

highCVSS 8.8CVE-2026-50444
Missing authentication for critical function in Windows Server Update Service allows an authorized attacker to elevate privileges over a network.

CSIRTS triage

vendor: Microsoftproduct: Windows Server Update ServicePrivilege escalation
What
Missing authentication for critical function allows an authorized attacker to elevate privileges over a network.
Who is affected
Authorized users of Windows Server Update Service.
Urgency
Remediation is urgent due to high severity and potential for privilege escalation.
Action
Apply the latest 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
high — CVSS 8.8
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50444

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-2026-50444coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Windows Server Update

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from Microsoft Security Response Center