CVE-2026-69876: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
CVE-2026-69876 is a use-after-free vulnerability in the Windows DHCP Server component affecting multiple versions of Microsoft Windows 10, including Version 1607. This vulnerability allows an authorized attacker on an adjacent network to execute arbitrary code. The issue has a high severity rating with a CVSS score of 8. An official fix is available from Microsoft.
CVSS v3.1
Score 8.0high
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 (CVE-2026-69876) involves a use-after-free condition in the Windows DHCP Server. It affects several Windows versions, including Windows 10 Version 1607 and others, within specific build ranges. An authorized attacker on an adjacent network can exploit this flaw to execute arbitrary code, potentially leading to full system compromise. The vulnerability has been assigned a CVSS v3.1 score of 8.0, indicating high severity. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation allows an authorized attacker on an adjacent network to execute arbitrary code with high impact on confidentiality, integrity, and availability. This could lead to full system compromise or disruption of DHCP services.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security updates provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69876 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T22:53:31.650Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69876","vendor":"Microsoft"}]
Threat ID: 6aa04536acd9273b49fa9aa8
Added to database: 09/08/2026, 17:26:14 UTC
Last enriched: 10/16/2026, 21:38:11 UTC
Last updated: 10/24/2026, 03:05:10 UTC
Views: 26
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