CVE-2026-68820

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

CVSS 7 high · Microsoft Windows 10 Version 1607 · published 2026-08-11

Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

NVD · CVE.org

Coverage 2 sources

1. 2026-08-11 CISA Cybersecurity Advisories high CISA Adds Three Known Exploited Vulnerabilities to Catalog

   CISA added three exploited vulnerabilities to its KEV Catalog: Cisco ASA/FTD, Microsoft Windows, and Metabase.

2. 2026-08-12 Help Net Security critical Microsoft patches 400+ vulnerabilities, one zero-day under attack (CVE-2026-68820)

   Microsoft patched over 400 vulnerabilities, including a zero-day flaw in the Windows Ancillary Function Driver for WinSock.

Mentioned with

CVE-2026-20349 CVE-2026-72898

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