CVE-2026-61920: 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 DNS allows an authorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability involves a concurrent execution issue caused by improper synchronization in the Windows DNS service on Windows 10 Version 1607 (build 10.0.14393.0). An authorized attacker with network access can exploit this race condition to execute arbitrary code remotely. The flaw is tracked as CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization). Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized attacker to execute arbitrary code remotely on the affected system, potentially leading to full compromise of confidentiality, integrity, and availability. The CVSS vector indicates that the attack requires high attack complexity and privileges, but no user interaction. The impact includes high confidentiality, integrity, and availability impacts.
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-2026-61920 to remediate this vulnerability.
CVE-2026-61920: 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 DNS allows an authorized attacker to execute code over a network.
CVSS v3.1
Score 6.6medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a concurrent execution issue caused by improper synchronization in the Windows DNS service on Windows 10 Version 1607 (build 10.0.14393.0). An authorized attacker with network access can exploit this race condition to execute arbitrary code remotely. The flaw is tracked as CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization). Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized attacker to execute arbitrary code remotely on the affected system, potentially leading to full compromise of confidentiality, integrity, and availability. The CVSS vector indicates that the attack requires high attack complexity and privileges, but no user interaction. The impact includes high confidentiality, integrity, and availability impacts.
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-2026-61920 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-13T04:47:32.462Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61920","vendor":"Microsoft"}]
Threat ID: 6a7b5804bf8831d5391558ab
Added to database: 08/11/2026, 17:12:36 UTC
Last enriched: 08/11/2026, 22:42:49 UTC
Last updated: 08/12/2026, 00:12:10 UTC
Views: 3
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