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CVE-2026-50465: Windows DNS Client Tampering Vulnerability

highCVSS 7.1CVE-2026-50465
Improper access control in Microsoft Windows DNS allows an authorized attacker to perform tampering locally.

CSIRTS triage

vendor: Microsoftproduct: Windows DNSOther
What
Improper access control in Microsoft Windows DNS allows an authorized attacker to perform tampering locally.
Who is affected
Authorized users of Microsoft Windows DNS.
Urgency
Remediation is urgent due to the high severity rating and potential for local tampering.
Action
Apply the latest security patch provided by Microsoft.

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 7.1
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50465

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-2026-50465coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Windows DNS Client

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