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Windows CVE-2026-20924

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

NVD PRIMARY
7.8 HIGH
AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

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

AnalysisAI

Privilege escalation in Windows Management Services via use-after-free memory corruption affects Windows 10, Windows 11, and Windows Server 2019, enabling authenticated local attackers to gain elevated system privileges. An authorized user can exploit this vulnerability through a race condition to execute arbitrary code with higher privileges. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate as low-privileged local user
Exploit
Trigger race condition in Windows Management Services
Execution
Exploit use-after-free vulnerability
Impact
Escalate to SYSTEM privileges

Vulnerability AssessmentAI

Exploitation Authenticated local user account required. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 7.8 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker could exploit this vulnerability to compromise the affected system.
Remediation Monitor vendor advisories for a patch. Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 7 days: Identify all affected systems and apply vendor patches promptly. …

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CVE-2026-20924 vulnerability details – vuln.today

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