{"schema_version":1,"title":"Microsoft Windows Ancillary Function Driver for WinSock vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 4 vulnerabilities in Microsoft Windows Ancillary Function Driver for WinSock: 0 in the last 7 days and 1 in the last 90 days, 1 of them critical and 1 exploited in the wild. The most recent, CVE-2026-68820, was published on 11 August 2026.","url":"https://junglewise.ai/threats/technologies/windows-ancillary-function-driver-for-winsock","json_url":"https://junglewise.ai/threats/technologies/windows-ancillary-function-driver-for-winsock.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/windows-ancillary-function-driver-for-winsock","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":3,"all_time":4,"critical":1,"exploited":1,"last_7_days":0,"last_30_days":0,"last_90_days":1,"last_365_days":4},"latest":[{"cve":"CVE-2026-68820","cvss":7,"epss":0.0033,"slug":"cve-2026-68820-microsoft-windows-ancillary-function-driver-for-winsock-use-after","title":"Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.","severity":"critical","exploited":true,"published_at":"2026-08-11T17:19:06.357+00:00","url":"https://junglewise.ai/threats/cve-2026-68820-microsoft-windows-ancillary-function-driver-for-winsock-use-after"},{"cve":"CVE-2026-41088","cvss":7.8,"epss":0.0007,"slug":"cve-2026-41088-microsoft-windows-winsock-ancillary-function-driver-type","title":"Microsoft Windows WinSock Ancillary Function Driver type confusion","severity":"high","exploited":false,"published_at":"2026-05-12T18:17:20.573+00:00","url":"https://junglewise.ai/threats/cve-2026-41088-microsoft-windows-winsock-ancillary-function-driver-type"},{"cve":"CVE-2026-34345","cvss":7,"epss":0.0004,"slug":"cve-2026-34345-microsoft-windows-ancillary-function-driver-type-confusion","title":"Microsoft Windows Ancillary Function Driver type confusion privilege escalation","severity":"high","exploited":false,"published_at":"2026-05-12T18:17:09.19+00:00","url":"https://junglewise.ai/threats/cve-2026-34345-microsoft-windows-ancillary-function-driver-type-confusion"},{"cve":"CVE-2026-34344","cvss":7.8,"slug":"cve-2026-34344-microsoft-windows-type-confusion-in-ancillary-function-driver-for","title":"Microsoft Windows type confusion in Ancillary Function Driver for WinSock","severity":"high","exploited":false,"published_at":"2026-05-12T18:17:09.003+00:00","url":"https://junglewise.ai/threats/cve-2026-34344-microsoft-windows-type-confusion-in-ancillary-function-driver-for"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":1,"exploited":1,"vulnerabilities":1},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"Microsoft Windows","slug":"windows-","vulnerabilities":963,"url":"https://junglewise.ai/threats/technologies/windows-"},{"name":"Microsoft Windows 10","slug":"windows-10","vulnerabilities":588,"url":"https://junglewise.ai/threats/technologies/windows-10"},{"name":"Microsoft Windows 11","slug":"windows-11","vulnerabilities":493,"url":"https://junglewise.ai/threats/technologies/windows-11"},{"name":"Microsoft Windows Server 2012","slug":"windows-server-2012","vulnerabilities":293,"url":"https://junglewise.ai/threats/technologies/windows-server-2012"},{"name":"Microsoft Windows Server 2016","slug":"windows-server-2016","vulnerabilities":213,"url":"https://junglewise.ai/threats/technologies/windows-server-2016"},{"name":"Microsoft Windows Server 2019","slug":"windows-server-2019","vulnerabilities":211,"url":"https://junglewise.ai/threats/technologies/windows-server-2019"},{"name":"Microsoft Windows 11 24h2","slug":"windows-11-24h2","vulnerabilities":192,"url":"https://junglewise.ai/threats/technologies/windows-11-24h2"},{"name":"Microsoft Windows Server 2022","slug":"windows-server-2022","vulnerabilities":178,"url":"https://junglewise.ai/threats/technologies/windows-server-2022"},{"name":"Microsoft Edge","slug":"edge-chromium-based","vulnerabilities":167,"url":"https://junglewise.ai/threats/technologies/edge-chromium-based"},{"name":"Microsoft Windows 11 25h2","slug":"windows-11-25h2","vulnerabilities":161,"url":"https://junglewise.ai/threats/technologies/windows-11-25h2"},{"name":"Microsoft Windows 11 Version 26H1","slug":"windows-11-version-26h1","vulnerabilities":135,"url":"https://junglewise.ai/threats/technologies/windows-11-version-26h1"},{"name":"Microsoft Windows Server 2025","slug":"windows-server-2025","vulnerabilities":124,"url":"https://junglewise.ai/threats/technologies/windows-server-2025"}],"technology":{"hub":true,"name":"Microsoft Windows Ancillary Function Driver for WinSock","slug":"windows-ancillary-function-driver-for-winsock","vendor":{"name":"Microsoft","slug":"microsoft","url":"https://junglewise.ai/threats/vendors/microsoft"},"aliases":[],"category":"operating-system-component","homepage":"https://www.microsoft.com/windows","description":"The Windows Ancillary Function Driver (afd.sys) is a kernel-mode driver that provides the underlying support for Windows Sockets (WinSock) applications.","url":"https://junglewise.ai/threats/technologies/windows-ancillary-function-driver-for-winsock"},"most_severe":[{"cve":"CVE-2026-68820","cvss":7,"epss":0.0033,"slug":"cve-2026-68820-microsoft-windows-ancillary-function-driver-for-winsock-use-after","title":"Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.","severity":"critical","exploited":true,"published_at":"2026-08-11T17:19:06.357+00:00","url":"https://junglewise.ai/threats/cve-2026-68820-microsoft-windows-ancillary-function-driver-for-winsock-use-after"},{"cve":"CVE-2026-41088","cvss":7.8,"epss":0.0007,"slug":"cve-2026-41088-microsoft-windows-winsock-ancillary-function-driver-type","title":"Microsoft Windows WinSock Ancillary Function Driver type confusion","severity":"high","exploited":false,"published_at":"2026-05-12T18:17:20.573+00:00","url":"https://junglewise.ai/threats/cve-2026-41088-microsoft-windows-winsock-ancillary-function-driver-type"},{"cve":"CVE-2026-34344","cvss":7.8,"slug":"cve-2026-34344-microsoft-windows-type-confusion-in-ancillary-function-driver-for","title":"Microsoft Windows type confusion in Ancillary Function Driver for WinSock","severity":"high","exploited":false,"published_at":"2026-05-12T18:17:09.003+00:00","url":"https://junglewise.ai/threats/cve-2026-34344-microsoft-windows-type-confusion-in-ancillary-function-driver-for"},{"cve":"CVE-2026-34345","cvss":7,"epss":0.0004,"slug":"cve-2026-34345-microsoft-windows-ancillary-function-driver-type-confusion","title":"Microsoft Windows Ancillary Function Driver type confusion privilege escalation","severity":"high","exploited":false,"published_at":"2026-05-12T18:17:09.19+00:00","url":"https://junglewise.ai/threats/cve-2026-34345-microsoft-windows-ancillary-function-driver-type-confusion"}],"generated_at":"2026-09-26T09:24:00.138874+00:00"}