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 a race condition (CWE-362) in Windows Shell on Windows 10 Version 1809 (build 10.0.17763.0). The flaw arises from improper synchronization during concurrent execution using shared resources, which can be exploited by an authorized local attacker to elevate privileges. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability as detailed in their security update guide.
Potential Impact
An authorized local attacker can exploit this race condition to elevate privileges on the affected system, potentially gaining higher-level access than intended. This could lead to full system compromise affecting confidentiality, integrity, and availability of the system. There are no known exploits in the wild at this time.
Mitigation Recommendations
Microsoft has released an official patch to remediate this vulnerability. It is strongly recommended to apply the security update provided by Microsoft for Windows 10 Version 1809 as soon as possible to mitigate this risk.
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-27918) involves a race condition (CWE-362) in Windows Shell on Windows 10 Version 1809 (build 10.0.17763.0). The flaw arises from improper synchronization during concurrent execution using shared resources, which can be exploited by an authorized local attacker to elevate privileges. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability as detailed in their security update guide.
Potential Impact
An authorized local attacker can exploit this race condition to elevate privileges on the affected system, potentially gaining higher-level access than intended. This could lead to full system compromise affecting confidentiality, integrity, and availability of the system. There are no known exploits in the wild at this time.
Mitigation Recommendations
Microsoft has released an official patch to remediate this vulnerability. It is strongly recommended to apply the security update provided by Microsoft for Windows 10 Version 1809 as soon as possible to mitigate this risk.
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: 4/14/2026, 5:32:17 PM
Last enriched: 4/14/2026, 6:48:01 PM
Last updated: 4/15/2026, 6:03:47 AM
Views: 3
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