CVE-2026-69827: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1607
Description
CVE-2026-69827 is a high-severity race condition vulnerability in the DNS Server component of Microsoft Windows 10 Version 1607 and related versions. It allows an unauthorized attacker to execute code remotely over a network due to improper synchronization of shared resources. The vulnerability affects multiple Windows 10 builds and some earlier Windows versions. An official fix is available from Microsoft.
CVSS v3.1
Score 8.1high
Affected software
Microsoft
Windows 10 Version 1607
Microsoft
Windows 10 Version 1809
Microsoft
Windows Server 2012
Microsoft
Windows Server 2012 (Server Core installation)
Microsoft
Windows Server 2012 R2
Microsoft
Windows Server 2012 R2 (Server Core installation)
Microsoft
Windows Server 2016
Microsoft
Windows Server 2016 (Server Core installation)
Microsoft
Windows Server 2019
Microsoft
Windows Server 2019 (Server Core installation)
Microsoft
Windows Server 2022
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves concurrent execution using a shared resource without proper synchronization (CWE-362) in the DNS Server of Microsoft Windows 10 Version 1607 and other affected versions. The race condition can be exploited by an unauthorized attacker over the network to execute arbitrary code, impacting confidentiality, integrity, and availability. The CVSS 3.1 base score is 8.1, indicating high severity. Microsoft has published an official fix for the affected versions.
Potential Impact
Successful exploitation allows remote code execution without privileges or user interaction, leading to full compromise of the affected system's confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security updates provided by Microsoft for the affected Windows versions as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69827.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T22:50:31.852Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69827","vendor":"Microsoft"}]
Threat ID: 6aa04531acd9273b49fa9a23
Added to database: 09/08/2026, 17:26:09 UTC
Last enriched: 10/16/2026, 21:36:04 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 27
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