CVE-2026-69416: CWE-126: Buffer Over-read in Microsoft Windows 10 Version 1607
Description
CVE-2026-69416 is a buffer over-read vulnerability in the Windows DHCP Server component affecting multiple versions of Microsoft Windows 10, including Version 1607. An authorized attacker on an adjacent network can exploit this flaw to cause a denial of service. The vulnerability has a medium severity rating with a CVSS score of 5.7. Microsoft has released an official fix to address this issue.
CVSS v3.1
Score 5.7medium
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 a buffer over-read in the Windows DHCP Server, which can be triggered by an authorized attacker on an adjacent network segment. Exploitation results in denial of service (DoS) conditions. The affected versions include several builds of Windows 10 and Windows Server versions as specified. The CVSS 3.1 vector indicates the attack requires adjacent network access, low attack complexity, and low privileges with no user interaction. The impact is limited to availability disruption. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an authorized attacker on an adjacent network to cause denial of service by triggering a buffer over-read in the DHCP Server component. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits are reported in the wild.
Mitigation Recommendations
An official fix from Microsoft is available and should be applied to affected systems. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69416 for update details and installation instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T20:57:58.964Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69416","vendor":"Microsoft"}]
Threat ID: 6aa044f3acd9273b49fa7fbe
Added to database: 09/08/2026, 17:25:07 UTC
Last enriched: 10/16/2026, 21:10:53 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 34
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