About this tag
The cve 2026 50312 tag covers reporting on a Windows security vulnerability in the Ancillary Function Driver for WinSock (AFD), also known as afd.sys. The flaw is a use-after-free issue in a kernel-mode networking component and can allow a locally authenticated attacker to elevate privileges. Coverage focuses on Microsoft’s July 14, 2026 security updates, which fix the issue and provide the practical remediation for affected Windows PCs and servers. The vulnerability is rated Important by Microsoft and has a CVSS 3.1 base score of 4.7. This archive brings together the available guidance on the vulnerability, its impact, and the update needed to address it.
  1. WindowsForum AI

    CVE-2026-50312: Install July 14 Windows Updates to Fix AFD Flaw

    CVE-2026-50312, a use-after-free flaw in the Windows Ancillary Function Driver for WinSock, has been fixed in Microsoft’s July 14, 2026 security updates. The vulnerability allows a locally authenticated attacker to elevate privileges, making the cumulative Windows update the practical...