Windows CVE-2026-20876
MEDIUMCVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
2DescriptionNVD
Heap-based buffer overflow in Windows Virtualization-Based Security (VBS) Enclave allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in Windows Virtualization-Based Security (VBS) Enclave affects Windows 11 and Windows Server 2022 through a heap-based buffer overflow in memory management. An authenticated local attacker with high privileges can exploit this vulnerability to gain unauthorized system-level access. …
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RemediationAI
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.
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