Windows CVE-2026-20857
HIGHCVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
Untrusted pointer dereference in Windows Cloud Files Mini Filter Driver allows an authorized attacker to elevate privileges locally.
AnalysisAI
Windows Cloud Files Mini Filter Driver contains an unsafe pointer dereference vulnerability that enables authenticated local users to achieve privilege escalation on affected Windows versions including Windows 10 1809, Windows 11, and Windows Server 2022. An attacker with valid credentials can exploit this flaw to gain elevated system privileges without user interaction. …
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RemediationAI
Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.
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