CVE-2026-20877
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
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 10 22h2, Windows Server 2022 23h2, and Windows 11 23h2 through a use-after-free memory flaw. An authenticated local attacker can exploit this vulnerability to gain elevated system privileges. …
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Remediation
Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.
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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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