CVE-2026-50669: 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 Telephony Service allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a race condition (CWE-362) in the Windows Telephony Service on Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization during concurrent execution of shared resources enables a local attacker with some privileges to escalate their privileges further. The issue has been assigned CVE-2026-50669 and has a CVSS v3.1 base score of 7.0, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this vulnerability.
Potential Impact
An authorized local attacker can exploit this race condition to elevate their privileges on the affected system. This could lead to full system compromise, including unauthorized access to sensitive information and the ability to execute arbitrary code with higher privileges.
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-2026-50669 to remediate this vulnerability.
CVE-2026-50669: 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 Telephony Service allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a race condition (CWE-362) in the Windows Telephony Service on Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization during concurrent execution of shared resources enables a local attacker with some privileges to escalate their privileges further. The issue has been assigned CVE-2026-50669 and has a CVSS v3.1 base score of 7.0, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this vulnerability.
Potential Impact
An authorized local attacker can exploit this race condition to elevate their privileges on the affected system. This could lead to full system compromise, including unauthorized access to sensitive information and the ability to execute arbitrary code with higher privileges.
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-2026-50669 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-05T14:33:50.832Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50669","vendor":"Microsoft"}]
Threat ID: 6a5676aa68715ace43f09755
Added to database: 07/14/2026, 17:49:30 UTC
Last enriched: 07/14/2026, 22:47:54 UTC
Last updated: 07/15/2026, 04:18:39 UTC
Views: 2
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