CVE-2026-34345: 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 of concurrent execution using shared resources can be exploited by an authorized local attacker to elevate privileges. The CVSS 3.1 vector indicates the attack requires local access with high attack complexity and low privileges but no user interaction, impacting confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this race condition to elevate privileges on the affected Windows 10 Version 1607 system. 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
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-2026-34345 to remediate this vulnerability.
CVE-2026-34345: 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 of concurrent execution using shared resources can be exploited by an authorized local attacker to elevate privileges. The CVSS 3.1 vector indicates the attack requires local access with high attack complexity and low privileges but no user interaction, impacting confidentiality, integrity, and availability. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this race condition to elevate privileges on the affected Windows 10 Version 1607 system. 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
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-2026-34345 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-03-26T21:02:16.446Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34345","vendor":"Microsoft"}]
Threat ID: 6a036540cbff5d861008c490
Added to database: 5/12/2026, 5:37:04 PM
Last enriched: 5/12/2026, 7:22:24 PM
Last updated: 5/13/2026, 4:59:17 AM
Views: 2
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