CVE-2026-69730: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
CVE-2026-69730 is a critical use-after-free vulnerability in the Windows DNS component affecting multiple versions of Microsoft Windows 10, including Version 1607. This flaw allows an unauthorized attacker to execute arbitrary code remotely over a network without user interaction or privileges. The vulnerability has a CVSS score of 9.8, indicating a high impact on confidentiality, integrity, and availability. Microsoft has released official patches to address this issue.
CVSS v3.1
Score 9.8critical
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
CVE-2026-69730 is a use-after-free vulnerability (CWE-416) in the Windows DNS service that enables remote code execution by an unauthenticated attacker over the network. The vulnerability affects several Windows versions, including Windows 10 Version 1607 and others, within specified build ranges. The flaw allows execution of arbitrary code with system-level privileges, posing a critical security risk. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation of this vulnerability allows an attacker to execute arbitrary code remotely on affected Windows systems without requiring user interaction or privileges. This can lead to full system compromise, including complete control over confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security updates provided by Microsoft promptly to remediate this vulnerability. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69730 for detailed patch information and update instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T21:35:55.264Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69730","vendor":"Microsoft"}]
Threat ID: 6aa04523acd9273b49fa9899
Added to database: 09/08/2026, 17:25:55 UTC
Last enriched: 10/16/2026, 21:30:42 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 114
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