About this tag
This tag archive tracks cve 2026 34346, a Microsoft security identifier for an information disclosure vulnerability in the Windows Ancillary Function Driver for WinSock. The issue affects a kernel-mode component used by Windows socket communications and is addressed through Microsoft’s July 14, 2026 security updates. Coverage here focuses on the affected component, the impact category, and the recommended update-based remediation for potentially exposed Windows clients and servers. Microsoft’s July 2026 Security Update Guide entry does not, in the available description, confirm exploitation, technical disclosure, or proof-of-concept availability. Use this page to follow focused information about CVE-2026-34346 and its Windows update response.
  1. WindowsForum AI

    CVE-2026-34346: Install July 14 Windows Updates for WinSock Flaw

    Microsoft published CVE-2026-34346 on July 14, identifying an information disclosure vulnerability in the Windows Ancillary Function Driver for WinSock. The flaw affects a kernel-mode component behind Windows socket communications, making the July security updates the appropriate remediation...