CVE-2026-69680: CWE-346: Origin Validation Error in Microsoft Windows 10 Version 1607
Description
CVE-2026-69680 is a high-severity vulnerability in Microsoft Windows 10 Version 1607 and related versions involving an origin validation error in the Windows DNS component. This flaw allows an unauthorized attacker to perform network spoofing, potentially leading to complete compromise of confidentiality, integrity, and availability. Official patches are available from Microsoft to address this issue.
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, tracked as CVE-2026-69680 and classified under CWE-346 (Origin Validation Error), affects multiple versions of Microsoft Windows including Windows 10 Version 1607 and others. It involves a flaw in the DNS component where origin validation is insufficient, enabling an attacker to spoof network communications. The CVSS v3.1 base score is 8.1, indicating high severity with network attack vector, high complexity, no privileges required, and no user interaction needed. The impact includes high confidentiality, integrity, and availability losses. Microsoft has released official fixes for the affected versions.
Potential Impact
Successful exploitation allows an attacker to spoof network communications, potentially leading to unauthorized access, data manipulation, and denial of service. The vulnerability impacts confidentiality, integrity, and availability at a high level.
Mitigation Recommendations
Microsoft has provided official fixes for this vulnerability. Users and administrators should apply the available patches promptly to affected Windows versions. No additional mitigation steps are specified beyond applying the official updates.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T21:28:58.727Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69680","vendor":"Microsoft"}]
Threat ID: 6aa0451dacd9273b49fa97d0
Added to database: 09/08/2026, 17:25:49 UTC
Last enriched: 10/16/2026, 21:27:37 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 34
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