CVE-2026-21221

Capability Access Management Service (camsvc) Elevation of Privilege Vulnerability

State: Published
Severity: 7.0 High
Published: Jan 13, 2026
Updated: Jul 30, 2026
Reserved: Dec 11, 2025

Description

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

Scores

CVSS	Score	Vector	Source
3.1	7.0 High	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-416 Use After Free

Affected Products

Product	Versions
Windows 11 Version 24H2Microsoft	10.0.26100.0 to before 10.0.26100.7623Affected
Windows 11 Version 25H2Microsoft	10.0.26200.0 to before 10.0.26200.7623Affected
Windows Server 2025Microsoft	10.0.26100.0 to before 10.0.26100.32230Affected
Windows Server 2025 (Server Core installation)Microsoft	10.0.26100.0 to before 10.0.26100.32230Affected

References

Capability Access Management Service (camsvc) Elevation of Privilege Vulnerabilityvendor-advisorypatch

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