Windows CVE-2026-20870
HIGHCVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
Use after free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in Windows Win32K ICOMP component via use-after-free memory corruption affects Windows 11 (24h2, 25h2) and Windows Server 2025. An authenticated local attacker can exploit this vulnerability to gain SYSTEM-level privileges with no user interaction required. …
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RemediationAI
Within 7 days: Identify all affected systems and apply vendor patches promptly. If patching is delayed, consider network segmentation to limit exposure.
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