CVE-2026-62894: Windows DWM Core Library Elevation of Privilege Vulnerability

Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

CSIRTS triage

What: Heap-based buffer overflow in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
Who is affected: Authorized local users on systems running Windows with DWM.
Urgency: High priority; local privilege escalation with high CVSS (7.8) enables full system compromise.
Action: Apply Microsoft security patch immediately; restrict local account access and monitor for unauthorized privilege escalation.

AI-assisted analysis generated from the source advisory — verify against the original.

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EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-628940.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 15% of all EPSS-scored CVEs.

CVE	CSIRTS overview	External
CVE-2026-62894	coverage & exploitation status	NVD · CVE.org

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