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CVE-2026-62769: Windows DNS Elevation of Privilege Vulnerability

mediumCVSS 6.7CVE-2026-62769
Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.

CSIRTS triage

vendor: Microsoftproduct: Windows DNSPrivilege escalation
What
Numeric truncation error in Windows DNS allows privilege elevation by an authorized local attacker.
Who is affected
Systems running Windows DNS where an authorized local user has access.
Urgency
Medium severity (CVSS 6.7) requiring local access; patch within normal maintenance windows.
Action
Apply the latest Windows DNS security update from Microsoft.

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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-2026-62769

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-2026-62769coverage & 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