CVE-2026-96311: CWE-862: Missing Authorization in Microsoft Windows 10 Version 1607
Description
CVE-2026-96311 is a medium severity vulnerability in Microsoft Windows 10 Version 1607 and related builds. It involves improper authorization in the Windows Network List Service, allowing a locally authorized attacker to perform tampering actions. The vulnerability does not impact confidentiality or availability but can affect integrity. An official fix is available from Microsoft.
CVSS v3.1
Score 5.5medium
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 11 Version 26H2
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-2026-96311) is classified as CWE-862 (Missing Authorization) and affects multiple builds of Microsoft Windows 10, including Version 1607 and later updates. The flaw exists in the Windows Network List Service, where improper authorization checks allow an attacker with local privileges to tamper with system components or configurations. The CVSS 3.1 base score is 5.5, indicating medium severity, with attack vector local, low attack complexity, and requiring low privileges but no user interaction. The impact affects integrity only, with no confidentiality or availability impact. Microsoft has issued an official fix for this vulnerability.
Potential Impact
An attacker with local authorized access can exploit this vulnerability to tamper with the Windows Network List Service, potentially altering system configurations or state. There is no impact on confidentiality or availability. The integrity of the affected system components can be compromised.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security updates provided by Microsoft for the affected Windows 10 versions as listed in the vendor advisory. No additional mitigation steps are required beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-22T22:31:49.522Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96311","vendor":"Microsoft"}]
Threat ID: 6ace85772cdf04f656a0047c
Added to database: 10/13/2026, 19:24:39 UTC
Last enriched: 10/14/2026, 00:20:07 UTC
Last updated: 10/14/2026, 00:20:07 UTC
Views: 5
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