CVE-2026-27927: 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 Projected File System allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a race condition (CWE-362) in the Windows Projected File System component of Windows 10 Version 1809 (build 10.0.17763.0). Improper synchronization during concurrent execution of shared resources can be exploited by an authorized local attacker to elevate privileges. The CVSS v3.1 base score is 7.8, indicating high severity, with impact on confidentiality, integrity, and availability. Microsoft has published an official fix for 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 compromise of system confidentiality, integrity, and availability as indicated by the CVSS metrics.
Mitigation Recommendations
Microsoft has released an official patch to remediate this vulnerability. Users and administrators should apply the update provided in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27927 to mitigate the risk. No additional mitigation steps are indicated beyond applying the official fix.
CVE-2026-27927: 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 Projected File System 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 involves a race condition (CWE-362) in the Windows Projected File System component of Windows 10 Version 1809 (build 10.0.17763.0). Improper synchronization during concurrent execution of shared resources can be exploited by an authorized local attacker to elevate privileges. The CVSS v3.1 base score is 7.8, indicating high severity, with impact on confidentiality, integrity, and availability. Microsoft has published an official fix for 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 compromise of system confidentiality, integrity, and availability as indicated by the CVSS metrics.
Mitigation Recommendations
Microsoft has released an official patch to remediate this vulnerability. Users and administrators should apply the update provided in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27927 to mitigate the risk. No additional mitigation steps are indicated beyond applying the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-24T21:35:49.688Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27927","vendor":"Microsoft"}]
Threat ID: 69de7a2482d89c981fd6ba02
Added to database: 4/14/2026, 5:32:20 PM
Last enriched: 5/19/2026, 10:39:17 AM
Last updated: 5/30/2026, 4:28:53 PM
Views: 51
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