Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability

Microsoft Windows Ancillary Function Driver for WinSock

Microsoft Windows Ancillary Function Driver for WinSock contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally. Added to CISA KEV on 2026-08-11 (federal deadline 2026-08-25).

First seen: 11 Aug 2026
Last update: 11 Aug 2026, 12:00 UTC
Identifiers: CVE-2026-68820
Source: CISA KEV
On the menu as: Windows

Check this repository for exposure to one security incident from pwned.coffee. Report first, change nothing until I say so.

## Microsoft Windows Ancillary Function Driver for WinSock Use-After-Free Vulnerability
Severity: high, exploited in the wild. Patch status: patched.
Affected: Microsoft Windows Ancillary Function Driver for WinSock
Ids: CVE-2026-68820

Microsoft Windows Ancillary Function Driver for WinSock contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally. Added to CISA KEV on 2026-08-11 (federal deadline 2026-08-25).

## Steps
1. This touches infrastructure (windows). Look in terraform, ansible, cloud-init, Dockerfiles and docs for the product and version we run. If it isn't in the repo, say so and list what a human should check on the box.

## Report
A table: file, product or package, version in use, affected yes/no, exact fix. Then anything a human has to check outside the repo.

If you have the pwned.coffee MCP server (https://pwned.coffee/mcp), call lookup_cve("CVE-2026-68820") for the latest, and check_repo with this repo's lockfiles, Dockerfiles and workflows for a full receipt.
Sources: https://nvd.nist.gov/vuln/detail/CVE-2026-68820 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-68820
https://pwned.coffee/i/microsoft-windows-ancillary-function-driver-for-winsock-cve-2026-68820

Sources

Totalone hot coffee