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CVE-2026-65786: Desktop Window Manager Elevation of Privilege Vulnerability

highCVSS 7.8CVE-2026-65786
Heap-based buffer overflow in Desktop Window Manager allows an authorized attacker to elevate privileges locally.

CSIRTS triage

vendor: Microsoftproduct: Desktop Window ManagerPrivilege escalationMemory corruption
What
A heap-based buffer overflow in Desktop Window Manager allows privilege escalation.
Who is affected
Authorized users on systems running Desktop Window Manager who can trigger the overflow locally.
Urgency
High severity (CVSS 7.8); not currently exploited but requires local authenticated access.
Action
Apply Windows security updates that address CVE-2026-65786 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
high — CVSS 7.8
Published
2026-08-11
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65786

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-2026-65786coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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

Recent advisories for Desktop Window Manager

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.

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