CVE-2026-20815: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 11 Version 24H2
Concurrent execution using shared resource with improper synchronization ('race condition') in Capability Access Management Service (camsvc) allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-20815) involves a race condition (CWE-362) in the Capability Access Management Service (camsvc) on Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). Improper synchronization during concurrent execution of shared resources allows an authorized local attacker to elevate privileges. The issue is recognized by Microsoft and has an official fix available as per the vendor advisory.
Potential Impact
An authorized local attacker can exploit this race condition to elevate privileges on the affected Windows 11 system. This could lead to complete compromise of the affected system's confidentiality, integrity, and availability as indicated by the CVSS vector (C:H/I:H/A:H). No known exploits in the wild have been reported at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20815 to remediate this vulnerability.
CVE-2026-20815: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 11 Version 24H2
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.
CVSS v3.1
Score 7.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-20815) involves a race condition (CWE-362) in the Capability Access Management Service (camsvc) on Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). Improper synchronization during concurrent execution of shared resources allows an authorized local attacker to elevate privileges. The issue is recognized by Microsoft and has an official fix available as per the vendor advisory.
Potential Impact
An authorized local attacker can exploit this race condition to elevate privileges on the affected Windows 11 system. This could lead to complete compromise of the affected system's confidentiality, integrity, and availability as indicated by the CVSS vector (C:H/I:H/A:H). No known exploits in the wild have been reported at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20815 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.373Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20815","vendor":"Microsoft"}]
Threat ID: 69668adba60475309f9adf8b
Added to database: 01/13/2026, 18:11:39 UTC
Last enriched: 07/30/2026, 23:49:52 UTC
Last updated: 09/10/2026, 19:36:52 UTC
Views: 192
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