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CVE-2026-65797: Windows DNS Elevation of Privilege Vulnerability

mediumCVSS 6.7CVE-2026-65797
Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.

CSIRTS triage

vendor: Microsoftproduct: Windows DNSPrivilege escalation
What
A numeric truncation error in Windows DNS enables local privilege escalation.
Who is affected
Authorized local attackers on affected Windows systems.
Urgency
Medium priority; not currently exploited but privilege escalation requires mitigation.
Action
Apply Windows updates addressing CVE-2026-65797 when available.

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 6.7
Published
2026-08-11
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65797

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-2026-65797coverage & 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 Elevation

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