CVE-2026-27918: 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 Shell allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-27918) involves concurrent execution using a shared resource with improper synchronization in the Windows Shell on Windows 10 Version 1809 (build 10.0.17763.0). The race condition can be exploited by an authorized local user to elevate their privileges. The CVSS 3.1 base score is 7.8, indicating high severity, with impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this race condition vulnerability to elevate privileges on the affected Windows 10 Version 1809 system. Successful exploitation could lead to full control over the affected system, impacting confidentiality, integrity, and availability of the system resources.
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-2026-27918 to remediate this vulnerability.
CVE-2026-27918: 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 Shell allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-27918) involves concurrent execution using a shared resource with improper synchronization in the Windows Shell on Windows 10 Version 1809 (build 10.0.17763.0). The race condition can be exploited by an authorized local user to elevate their privileges. The CVSS 3.1 base score is 7.8, indicating high severity, with impact on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.
Potential Impact
An authorized local attacker can exploit this race condition vulnerability to elevate privileges on the affected Windows 10 Version 1809 system. Successful exploitation could lead to full control over the affected system, impacting confidentiality, integrity, and availability of the system resources.
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-2026-27918 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-24T21:35:49.687Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27918","vendor":"Microsoft"}]
Threat ID: 69de7a2182d89c981fd6a7d6
Added to database: 04/14/2026, 17:32:17 UTC
Last enriched: 06/19/2026, 17:02:40 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 94
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