Windows 10 1607 CVE-2026-21519
HIGHCVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionNVD
Access of resource using incompatible type ('type confusion') in Desktop Window Manager allows an authorized attacker to elevate privileges locally.
AnalysisAI
Desktop Window Manager (DWM) in Windows contains a type confusion vulnerability (CVE-2026-21519, CVSS 7.8) that enables authorized local attackers to escalate privileges. KEV-listed, this kernel-level vulnerability in the Windows compositor allows any authenticated user to achieve SYSTEM-level access through exploitation of an incompatible type access in DWM's resource handling.
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RemediationAI
Within 24 hours: Inventory all Windows systems running affected DWM versions and assess exposure in high-value environments (domain controllers, servers, sensitive workstations). Within 7 days: Implement compensating controls including strict user access policies, disable unnecessary local login capabilities, and enforce application whitelisting where feasible. …
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