CVE-2026-20930: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1809
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-20930) involves a race condition (CWE-362) in Windows Management Services on Windows 10 Version 1809 (build 10.0.17763.0). An authorized local attacker can exploit improper synchronization of shared resources to elevate privileges. The issue is confirmed and published with a CVSS v3.1 score of 7.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has issued an official patch to remediate the vulnerability as detailed in their security update guide.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate their privileges, potentially gaining higher system rights and control. This can lead to full system compromise, affecting confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1809 as soon as possible to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20930 for detailed patch information and deployment guidance.
CVE-2026-20930: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1809
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Management Services allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-20930) involves a race condition (CWE-362) in Windows Management Services on Windows 10 Version 1809 (build 10.0.17763.0). An authorized local attacker can exploit improper synchronization of shared resources to elevate privileges. The issue is confirmed and published with a CVSS v3.1 score of 7.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has issued an official patch to remediate the vulnerability as detailed in their security update guide.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate their privileges, potentially gaining higher system rights and control. This can lead to full system compromise, affecting confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1809 as soon as possible to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20930 for detailed patch information and deployment guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-04T20:04:16.336Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20930","vendor":"Microsoft"}]
Threat ID: 69de7a1482d89c981fd6a5e6
Added to database: 4/14/2026, 5:32:04 PM
Last enriched: 5/19/2026, 10:31:48 AM
Last updated: 5/30/2026, 10:15:02 AM
Views: 58
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