CVE-2026-50378: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1809
CVE-2026-50378 is a race condition vulnerability in Windows Key Guard on Microsoft Windows 10 Version 1809. It allows an authorized local attacker to elevate privileges due to improper synchronization when accessing shared resources. The vulnerability has a high severity with a CVSS score of 7.8. An official fix is available from Microsoft.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-50378) involves a concurrent execution issue using a shared resource with improper synchronization (CWE-362) in Windows Key Guard on Windows 10 Version 1809 (build 10.0.17763.0). An authorized local attacker can exploit this race condition to elevate privileges. The issue has been assigned a CVSS v3.1 base score of 7.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this vulnerability.
Potential Impact
An authorized local attacker can exploit this race condition to elevate their privileges on the affected system, potentially gaining higher-level access than intended. This can lead to full system compromise depending on the privileges escalated to. The vulnerability affects confidentiality, integrity, and availability of the system.
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-2026-50378 to remediate this vulnerability.
CVE-2026-50378: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1809
Description
CVE-2026-50378 is a race condition vulnerability in Windows Key Guard on Microsoft Windows 10 Version 1809. It allows an authorized local attacker to elevate privileges due to improper synchronization when accessing shared resources. The vulnerability has a high severity with a CVSS score of 7.8. An official fix is available from Microsoft.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-50378) involves a concurrent execution issue using a shared resource with improper synchronization (CWE-362) in Windows Key Guard on Windows 10 Version 1809 (build 10.0.17763.0). An authorized local attacker can exploit this race condition to elevate privileges. The issue has been assigned a CVSS v3.1 base score of 7.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this vulnerability.
Potential Impact
An authorized local attacker can exploit this race condition to elevate their privileges on the affected system, potentially gaining higher-level access than intended. This can lead to full system compromise depending on the privileges escalated to. The vulnerability affects confidentiality, integrity, and availability of the system.
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-2026-50378 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-04T18:55:14.744Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50378","vendor":"Microsoft"}]
Threat ID: 6a56769668715ace43f08e21
Added to database: 07/14/2026, 17:49:10 UTC
Last enriched: 07/15/2026, 00:17:30 UTC
Last updated: 07/15/2026, 00:17:30 UTC
Views: 2
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