CVE-2026-57093: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
CVE-2026-57093 is a use-after-free vulnerability (CWE-416) affecting the Windows Ancillary Function Driver for WinSock in Windows 10 Version 1607 (build 10.0.14393.0). This vulnerability permits an authorized local attacker to elevate privileges on the affected system. The vulnerability has been assigned a CVSS v3.1 base score of 7.0, indicating high severity, with attack vector local, high attack complexity, low privileges required, no user interaction, unchanged scope, and high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges, potentially gaining higher system rights than intended. This could allow the attacker to execute code with elevated permissions, compromising system confidentiality, integrity, and availability.
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-2026-57093 to remediate this vulnerability.
CVE-2026-57093: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-57093 is a use-after-free vulnerability (CWE-416) affecting the Windows Ancillary Function Driver for WinSock in Windows 10 Version 1607 (build 10.0.14393.0). This vulnerability permits an authorized local attacker to elevate privileges on the affected system. The vulnerability has been assigned a CVSS v3.1 base score of 7.0, indicating high severity, with attack vector local, high attack complexity, low privileges required, no user interaction, unchanged scope, and high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges, potentially gaining higher system rights than intended. This could allow the attacker to execute code with elevated permissions, compromising system confidentiality, integrity, and availability.
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-2026-57093 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-23T18:29:51.053Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-57093","vendor":"Microsoft"}]
Threat ID: 6a5676bd68715ace43f0afe0
Added to database: 07/14/2026, 17:49:49 UTC
Last enriched: 07/14/2026, 18:33:52 UTC
Last updated: 07/15/2026, 04:18:39 UTC
Views: 6
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