Capability Access Management Service (camsvc) Elevation of Privilege Vulnerability
This high-severity Microsoft Server advisory covers CVE-2026-20830 affecting Windows Server 2025 (Server Core installation).
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Summary
Concurrent execution using shared resource with improper synchronization ('race condition') in Capability Access Management Service (camsvc) allows an authorized attacker to elevate privileges locally.
Affected products named by the advisory: Windows Server 2025; Windows Server 2025 (Server Core installation).
- Windows Server 2025 10.0.26100.0 before 10.0.26100.32230
- Windows Server 2025 (Server Core installation) 10.0.26100.0 before 10.0.26100.32230
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
- 10.0.26100.32230
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation
Upgrade to a fixed release: 10.0.26100.32230. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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