CVE-2026-96921: CWE-843: Access of Resource Using Incompatible Type ('Type Confusion') in Microsoft Windows 10 Version 1607
Description
CVE-2026-96921 is a type confusion vulnerability in the Windows Message Queuing Queue Manager component of Microsoft Windows 10 Version 1607 and related builds. It allows an authorized local attacker to disclose information by accessing a resource using an incompatible type. The vulnerability has a medium severity rating with a CVSS score of 5.5. 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
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-2026-96921) involves type confusion (CWE-843) in the Windows Message Queuing Queue Manager on affected versions of Microsoft Windows 10, including Version 1607 and several subsequent builds. The flaw allows an authorized local attacker to access resources using an incompatible type, leading to information disclosure. The CVSS 3.1 base score is 5.5, indicating medium severity, with attack vector local, low attack complexity, and requiring low privileges without user interaction. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized local attacker can exploit this vulnerability to disclose sensitive information on affected Windows 10 systems. There is no indication of integrity or availability impact. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the available security updates as provided in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96921 to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-23T20:30:01.466Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96921","vendor":"Microsoft"}]
Threat ID: 6ace85822cdf04f656a004ca
Added to database: 10/13/2026, 19:24:50 UTC
Last enriched: 10/13/2026, 23:49:34 UTC
Last updated: 10/13/2026, 23:49:34 UTC
Views: 3
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