CVE-2026-20865

HIGH
2026-01-13 [email protected]
7.8
CVSS 3.1
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CVSS Vector

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

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
CVE Published
Jan 13, 2026 - 18:16 nvd
HIGH 7.8

Tags

Windows Use After Free Windows 11 24h2 Windows Server 2025 Windows Server 2022 Windows Server 2019 Windows 10 1809 Windows 10 22h2 Windows Server 2022 23h2 Windows 11 25h2 Windows 10 21h2 Windows 11 23h2 Microsoft

Description

Use after free in Windows Management Services allows an authorized attacker to elevate privileges locally.

Analysis

Privilege escalation in Windows Management Services affects Windows 11 24H2, Windows Server 2022, and 2025 through a use-after-free memory vulnerability that allows authenticated local attackers to gain elevated system privileges. The vulnerability requires local access and manual user interaction is not required, making it exploitable by any authorized account on the system. …

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Remediation

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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Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +39
POC: 0

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CVE-2026-20865 vulnerability details – vuln.today
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