CVE-2026-26173: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1607
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a race condition (CWE-362) in the Windows Ancillary Function Driver for WinSock on Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization when accessing shared resources can be exploited by an authorized local attacker to elevate privileges. Microsoft has published an official fix addressing this issue. The CVSS 3.1 vector indicates the attack requires local access with high complexity and low privileges but no user interaction, and impacts confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges on the affected system, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the system. There are no known public exploits currently in the wild.
Mitigation Recommendations
An official patch is available from Microsoft to address 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-2026-26173 to remediate this issue.
CVE-2026-26173: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1607
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a race condition (CWE-362) in the Windows Ancillary Function Driver for WinSock on Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization when accessing shared resources can be exploited by an authorized local attacker to elevate privileges. Microsoft has published an official fix addressing this issue. The CVSS 3.1 vector indicates the attack requires local access with high complexity and low privileges but no user interaction, and impacts confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges on the affected system, potentially leading to full system compromise. The vulnerability affects confidentiality, integrity, and availability of the system. There are no known public exploits currently in the wild.
Mitigation Recommendations
An official patch is available from Microsoft to address 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-2026-26173 to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-11T18:33:57.777Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26173","vendor":"Microsoft"}]
Threat ID: 69de7a1b82d89c981fd6a6cd
Added to database: 4/14/2026, 5:32:11 PM
Last enriched: 4/14/2026, 7:09:21 PM
Last updated: 4/15/2026, 6:04:23 AM
Views: 3
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