CVE-2026-41088: CWE-73: External Control of File Name or Path in Microsoft Windows 10 Version 21H2
Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-41088) is caused by access of a resource using an incompatible type (type confusion) within the Windows Ancillary Function Driver for WinSock on Windows 10 Version 21H2 (build 10.0.19044.0). Exploitation requires local access with some privileges and can lead to elevation of privileges, granting the attacker higher system rights. The CVSS v3.1 base score is 7.8, indicating high severity. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges on the affected Windows 10 system, potentially gaining higher-level access and control. This could lead to full system compromise depending on the privileges gained.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 21H2 (build 10.0.19044.0) as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41088. No additional mitigation steps are indicated beyond applying the official patch.
CVE-2026-41088: CWE-73: External Control of File Name or Path in Microsoft Windows 10 Version 21H2
Description
Access of resource using incompatible type ('type confusion') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-41088) is caused by access of a resource using an incompatible type (type confusion) within the Windows Ancillary Function Driver for WinSock on Windows 10 Version 21H2 (build 10.0.19044.0). Exploitation requires local access with some privileges and can lead to elevation of privileges, granting the attacker higher system rights. The CVSS v3.1 base score is 7.8, indicating high severity. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation of this vulnerability allows an authorized local attacker to elevate their privileges on the affected Windows 10 system, potentially gaining higher-level access and control. This could lead to full system compromise depending on the privileges gained.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 21H2 (build 10.0.19044.0) as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41088. No additional mitigation steps are indicated beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-16T19:12:36.194Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41088","vendor":"Microsoft"}]
Threat ID: 6a03655bcbff5d861008cb04
Added to database: 05/12/2026, 17:37:31 UTC
Last enriched: 06/19/2026, 17:41:10 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 67
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