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Windows CVE-2026-20825

MEDIUM
Improper Access Control (CWE-284)
2026-01-13 secure@microsoft.com
4.4
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
CVE Published
Jan 13, 2026 - 18:16 nvd
MEDIUM 4.4

DescriptionNVD

Improper access control in Windows Hyper-V allows an authorized attacker to disclose information locally.

AnalysisAI

Improper access control in Windows Hyper-V enables privileged local users to read sensitive system information without authorization. The vulnerability affects Windows 10 (versions 21H2 and 22H2), Windows Server 2025, and Hyper-V implementations where an authenticated attacker with high privileges can bypass security controls to access confidential data. …

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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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CVE-2026-20825 vulnerability details – vuln.today

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