What is CVE-2026-20830?

CVE-2026-20830 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Capability Access Management Service (camsvc) Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2026-20830 cover?

CVE-2026-20830 covers the following CVE IDs: CVE-2026-20830. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-20830?

CVE-2026-20830 has a CVSS v3 base score of 7.0, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-20830?

CVE-2026-20830 affects 2 products, including: Windows Server 2025; Windows Server 2025 (Server Core installation).

CVE-2026-20830HighCVSS 7.0

Capability Access Management Service (camsvc) Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

June 2, 2026

Last Modified

—

🔗 CVE IDs covered (1)

CVE-2026-20830 →

📋 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.

🎯 Affected products2

Windows Server 2025
Windows Server 2025 (Server Core installation)

✅ Remediation

KB5073379 (Security Update) — fixed build 10.0.26100.32230

🔗 References (4)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20830
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5073379
referencehttps://support.microsoft.com/en-us/topic/a6021fd2-b3b7-45a7-b68e-35c28a2a77da
referencehttps://support.microsoft.com/help/5073379