Race Condition Vulnerability in Capability Access Management Service from Microsoft
CVE-2026-20830

7HIGH

Key Information:

Vendor

Microsoft
Status
Windows Server 2025 (server Core Installation)
Windows Server 2025
Vendor
CVE Published:
13 January 2026

What is CVE-2026-20830?

A race condition vulnerability exists in the Capability Access Management Service (camsvc) due to improper synchronization when handling shared resources. This allows an authorized attacker to execute concurrent operations, potentially leading to unauthorized privilege escalation locally. The vulnerability underscores the importance of proper synchronization mechanisms to prevent such security issues.

Affected Version(s)

Windows Server 2025 (Server Core installation) x64-based Systems 10.0.26100.0 < 10.0.26100.7623

Windows Server 2025 x64-based Systems 10.0.26100.0 < 10.0.26100.7623

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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