CVE-2026-20830 - Vulnerability Details - OpenCVE

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

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00038.

Exploitation none

Automatable no

Technical Impact total

Vendors	Products
Microsoft Subscribe	Windows Server 2025 Subscribe

Configuration 1 [-]

cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20830

History

Tue, 13 Jan 2026 22:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Tue, 13 Jan 2026 18:15:00 +0000

Type	Values Removed	Values Added
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.
Title		Capability Access Management Service (camsvc) Elevation of Privilege Vulnerability
First Time appeared		Microsoft Microsoft windows Server 2025
Weaknesses		CWE-362 CWE-416
CPEs		cpe:2.3:o:microsoft:windows_server_2025::::::::
Vendors & Products		Microsoft Microsoft windows Server 2025
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20830
Metrics		cvssV3_1 `{'score': 7, 'vector': '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'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-01-13T17:56:50.400Z

Updated: 2026-01-16T21:28:08.704Z

Reserved: 2025-12-03T05:54:20.375Z

Link: CVE-2026-20830

Vulnrichment

Updated: 2026-01-13T21:43:26.302Z

NVD

Status : Analyzed

Published: 2026-01-13T18:16:10.817

Modified: 2026-01-15T13:06:09.143

Link: CVE-2026-20830

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

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