CVE-2026-20830

Capability Access Management Service (camsvc) Elevation of Privilege Vulnerability

CVE-2026-20830 is fixed in 2 products on 1 platform, first by KB5073379, released January 13, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.0

Important

Exploitation

None reported

Exploitation Unlikely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0029

21st percentile

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

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows Server 2025	26100.32230	KB5073379	Jan 13, 2026
Windows Server 2025 (Server Core installation)	26100.32230	KB5073379	Jan 13, 2026

Details

Published
January 13, 2026
Weakness
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20830

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