CVE-2026-26177: 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
This vulnerability involves a use-after-free condition in the Windows Ancillary Function Driver for WinSock component on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with low privileges and no user interaction. Successful exploitation could lead to elevation of privileges, impacting confidentiality, integrity, and availability of the system. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker could exploit this use-after-free vulnerability to elevate their privileges on the affected Windows 10 Version 1607 system. This could allow the attacker to gain higher-level access rights, potentially leading to full system compromise. There are no known exploits in the wild at this time.
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-2026-26177 to remediate this vulnerability.
CVE-2026-26177: 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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a use-after-free condition in the Windows Ancillary Function Driver for WinSock component on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with low privileges and no user interaction. Successful exploitation could lead to elevation of privileges, impacting confidentiality, integrity, and availability of the system. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker could exploit this use-after-free vulnerability to elevate their privileges on the affected Windows 10 Version 1607 system. This could allow the attacker to gain higher-level access rights, potentially leading to full system compromise. There are no known exploits in the wild at this time.
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-2026-26177 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-11T18:33:57.777Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26177","vendor":"Microsoft"}]
Threat ID: 69de7a1b82d89c981fd6a6d9
Added to database: 4/14/2026, 5:32:11 PM
Last enriched: 4/14/2026, 7:09:00 PM
Last updated: 4/15/2026, 6:06:07 AM
Views: 4
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