CVE-2026-20871
HIGH
2026-01-13
[email protected]
7.8
CVSS 3.1
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CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
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
Description
Use after free in Desktop Windows Manager allows an authorized attacker to elevate privileges locally.
Analysis
Local privilege escalation in Windows Desktop Window Manager (DWM) through use-after-free memory corruption affects Windows 10 22H2, Windows Server 2022, 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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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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External POC / Exploit Code
Leaving vuln.today
Destination URL
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