CVE-2026-62820: 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 unauthorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability involves concurrent execution using a shared resource with improper synchronization (CWE-362) in the Windows DNS service on Windows 10 Version 1607 (build 10.0.14393.0). An attacker can exploit this race condition remotely to execute arbitrary code without privileges or user interaction. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation could allow remote code execution with high impact on confidentiality, integrity, and availability. The attacker does not require privileges or user interaction but must have network access. This could lead to full system compromise on affected versions.
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-2026-62820 to remediate this vulnerability.
CVE-2026-62820: 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 unauthorized attacker to execute code over a network.
CVSS v3.1
Score 8.1high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves concurrent execution using a shared resource with improper synchronization (CWE-362) in the Windows DNS service on Windows 10 Version 1607 (build 10.0.14393.0). An attacker can exploit this race condition remotely to execute arbitrary code without privileges or user interaction. Microsoft has published an official fix to address this issue.
Potential Impact
Successful exploitation could allow remote code execution with high impact on confidentiality, integrity, and availability. The attacker does not require privileges or user interaction but must have network access. This could lead to full system compromise on affected versions.
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-2026-62820 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-14T21:10:38.082Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62820","vendor":"Microsoft"}]
Threat ID: 6a7b581cbf8831d539156069
Added to database: 08/11/2026, 17:13:00 UTC
Last enriched: 08/11/2026, 21:26:28 UTC
Last updated: 08/12/2026, 02:41:04 UTC
Views: 6
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