CVE-2026-50421: CWE-843: Access of Resource Using Incompatible Type ('Type Confusion') in Microsoft Windows 10 Version 1607
CVE-2026-50421 is a high-severity vulnerability in Microsoft Windows 10 Version 1607 involving type confusion in the Windows Connected User Experiences and Telemetry component. This flaw allows an authorized local attacker to elevate privileges. An official fix is available from Microsoft to address this issue.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-50421) is a type confusion flaw (CWE-843) in the Windows Connected User Experiences and Telemetry feature of Windows 10 Version 1607 (build 10.0.14393.0). It enables an authorized local attacker to gain elevated privileges by accessing resources using incompatible types. The CVSS 3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate their privileges, potentially gaining higher-level access to the affected system. This can lead to full system compromise including confidentiality, integrity, and availability impacts as indicated by the CVSS vector.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50421 to remediate this vulnerability.
CVE-2026-50421: CWE-843: Access of Resource Using Incompatible Type ('Type Confusion') in Microsoft Windows 10 Version 1607
Description
CVE-2026-50421 is a high-severity vulnerability in Microsoft Windows 10 Version 1607 involving type confusion in the Windows Connected User Experiences and Telemetry component. This flaw allows an authorized local attacker to elevate privileges. An official fix is available from Microsoft to address this issue.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-50421) is a type confusion flaw (CWE-843) in the Windows Connected User Experiences and Telemetry feature of Windows 10 Version 1607 (build 10.0.14393.0). It enables an authorized local attacker to gain elevated privileges by accessing resources using incompatible types. The CVSS 3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate their privileges, potentially gaining higher-level access to the affected system. This can lead to full system compromise including confidentiality, integrity, and availability impacts as indicated by the CVSS vector.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50421 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-04T18:56:53.259Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50421","vendor":"Microsoft"}]
Threat ID: 6a56769b68715ace43f09151
Added to database: 07/14/2026, 17:49:15 UTC
Last enriched: 07/14/2026, 23:48:01 UTC
Last updated: 07/14/2026, 23:57:42 UTC
Views: 3
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