Technology · Microsoft
Microsoft Windows Ancillary Function Driver for WinSock vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 6 vulnerabilities in Microsoft Windows Ancillary Function Driver for WinSock: 0 in the last 7 days and 2 in the last 90 days, 1 of them critical and 1 exploited in the wild. The most recent, CVE-2026-70245, was published on 13 October 2026. 2 vulnerabilities in the last four weeks, up from none in the four before.
- Last 7 days
- 0
- Last 90 days
- 2
- Critical, all time
- 1
- Exploited in the wild
- 1
About Microsoft Windows Ancillary Function Driver for WinSock
Windows Ancillary Function Driver for WinSock providing supplementary networking functionality for Winsock applications.
Latest Microsoft Windows Ancillary Function Driver for WinSock vulnerabilities
- CVE-2026-70245: Windows Ancillary Function Driver for WinSock type confusion privilege escalationhighCVSS 7.8EPSS 0.4%
- CVE-2026-70195: Windows Ancillary Function Driver for WinSock use after freemediumCVSS 4.7EPSS 0.2%
- CVE-2026-68820: Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.criticalexploited in the wildCVSS 7EPSS 0.3%
- CVE-2026-41088: Microsoft Windows WinSock Ancillary Function Driver type confusionhighCVSS 7.8EPSS 0.1%
- CVE-2026-34345: Microsoft Windows Ancillary Function Driver type confusion privilege escalationhighCVSS 7EPSS 0.0%
- CVE-2026-34344: Microsoft Windows type confusion in Ancillary Function Driver for WinSockhighCVSS 7.8
Most severe Microsoft Windows Ancillary Function Driver for WinSock vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-68820: Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.criticalexploited in the wildCVSS 7EPSS 0.3%
- CVE-2026-70245: Windows Ancillary Function Driver for WinSock type confusion privilege escalationhighCVSS 7.8EPSS 0.4%
- CVE-2026-41088: Microsoft Windows WinSock Ancillary Function Driver type confusionhighCVSS 7.8EPSS 0.1%
- CVE-2026-34344: Microsoft Windows type confusion in Ancillary Function Driver for WinSockhighCVSS 7.8
- CVE-2026-34345: Microsoft Windows Ancillary Function Driver type confusion privilege escalationhighCVSS 7EPSS 0.0%
- CVE-2026-70195: Windows Ancillary Function Driver for WinSock use after freemediumCVSS 4.7EPSS 0.2%
Vulnerabilities per week
2 vulnerabilities in the last four weeks, up from none in the four before. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 2 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
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A live badge for a README, a status page or an internal wiki: how many Microsoft Windows Ancillary Function Driver for WinSock vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/windows-ancillary-function-driver-for-winsock)<a href="https://junglewise.ai/threats/technologies/windows-ancillary-function-driver-for-winsock"><img src="https://junglewise.ai/threats/technologies/windows-ancillary-function-driver-for-winsock/badge.svg" alt="Microsoft Windows Ancillary Function Driver for WinSock vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/windows-ancillary-function-driver-for-winsock.json, and this page as text at https://junglewise.ai/threats/technologies/windows-ancillary-function-driver-for-winsock.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Microsoft Windows Ancillary Function Driver for WinSock vulnerabilities", https://junglewise.ai/threats/technologies/windows-ancillary-function-driver-for-winsock, 13 November 2026.