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Windows 11 25h2 CVE-2026-20918

HIGH
Race Condition (CWE-362)
2026-01-13 secure@microsoft.com
7.8
CVSS 3.1 · Vendor: microsoft
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Severity by source

Vendor (microsoft) PRIMARY
7.8 HIGH
AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Primary rating from Vendor (microsoft) · only source for this CVE.

CVSS VectorVendor: microsoft

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

DescriptionCVE.org

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.

AnalysisAI

Windows Management Services on Windows 10 and 11 contains a race condition in shared resource synchronization that enables authenticated local users to escalate privileges to system level. The vulnerability affects multiple Windows versions including 22h2, 21h2, and 25h2 builds, with no patch currently available.

Technical ContextAI

Classified as CWE-362 (Race Condition). Affects the Windows Management component of Windows 10 1809. Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.

RemediationAI

Monitor vendor advisories for a patch.

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CVE-2026-20918 vulnerability details – vuln.today

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