CVE-2026-69546: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
CVE-2026-69546 is a high-severity use-after-free vulnerability in Active Directory Domain Services on Microsoft Windows 10 Version 1607 and related builds. This flaw allows an unauthorized attacker to execute code remotely over a network. The vulnerability affects multiple Windows 10 versions prior to specific patch levels. Microsoft has released an official fix addressing this issue.
CVSS v3.1
Score 8.1high
Affected software
Microsoft
Windows 10 Version 1607
Microsoft
Windows 10 Version 1809
Microsoft
Windows 10 Version 21H2
Microsoft
Windows 10 Version 22H2
Microsoft
Windows 11 version 23H2
Microsoft
Windows 11 Version 23H2
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 version 26H1
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-2026-69546 is a use-after-free vulnerability (CWE-416) in Active Directory Domain Services on Microsoft Windows 10 Version 1607 and other related versions. An attacker can exploit this vulnerability remotely without user interaction to execute arbitrary code. The CVSS 3.1 base score is 8.1, indicating high severity, with network attack vector, high attack complexity, no privileges required, and no user interaction needed. The vulnerability impacts confidentiality, integrity, and availability. Microsoft has published an official fix for affected versions.
Potential Impact
Successful exploitation of this vulnerability allows an unauthorized attacker to execute arbitrary code remotely on affected Windows 10 systems, potentially leading to full system compromise including complete confidentiality, integrity, and availability loss.
Mitigation Recommendations
An official fix from Microsoft is available and should be applied promptly. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69546 for update details and installation instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T21:12:04.478Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69546","vendor":"Microsoft"}]
Threat ID: 6aa0450bacd9273b49fa8be6
Added to database: 09/08/2026, 17:25:31 UTC
Last enriched: 10/16/2026, 21:20:26 UTC
Last updated: 10/21/2026, 13:40:31 UTC
Views: 29
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