CVE-2026-50381: CWE-843: Access of Resource Using Incompatible Type ('Type Confusion') in Microsoft Windows 10 Version 21H2
Access of resource using incompatible type ('type confusion') in Composite Image File System Driver allows an authorized attacker to disclose information locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-50381) is a type confusion issue (CWE-843) in the Composite Image File System Driver of Microsoft Windows 10 Version 21H2 (build 10.0.19044.0). It permits an authorized attacker with local privileges to access resources using incompatible types, leading to information disclosure. The vulnerability does not require user interaction and has a medium attack complexity. Microsoft has released an official fix for this issue.
Potential Impact
An authorized local attacker can exploit this vulnerability to disclose sensitive information from the affected system. There is no impact on integrity or availability, only confidentiality is affected. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Microsoft has provided an official fix for this vulnerability. Users and administrators should apply the security update available from Microsoft to remediate this issue.
CVE-2026-50381: CWE-843: Access of Resource Using Incompatible Type ('Type Confusion') in Microsoft Windows 10 Version 21H2
Description
Access of resource using incompatible type ('type confusion') in Composite Image File System Driver allows an authorized attacker to disclose information locally.
CVSS v3.1
Score 5.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-50381) is a type confusion issue (CWE-843) in the Composite Image File System Driver of Microsoft Windows 10 Version 21H2 (build 10.0.19044.0). It permits an authorized attacker with local privileges to access resources using incompatible types, leading to information disclosure. The vulnerability does not require user interaction and has a medium attack complexity. Microsoft has released an official fix for this issue.
Potential Impact
An authorized local attacker can exploit this vulnerability to disclose sensitive information from the affected system. There is no impact on integrity or availability, only confidentiality is affected. No known exploits are reported in the wild at this time.
Mitigation Recommendations
Microsoft has provided an official fix for this vulnerability. Users and administrators should apply the security update available from Microsoft to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-04T18:55:14.744Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50381","vendor":"Microsoft"}]
Threat ID: 6a566f7668715ace43e6b90e
Added to database: 07/14/2026, 17:18:46 UTC
Last enriched: 08/13/2026, 14:44:08 UTC
Last updated: 08/27/2026, 11:04:02 UTC
Views: 201
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