CVE-2026-88242 · Infrastructure
NO FIX YET
A use-after-free bug in the Windows Ancillary Function Driver for WinSock (afd.sys) lets an attacker who already has a local account corrupt memory. A successful attack raises their privileges on the machine.
first public Nov 10, 2026 · 1 source
Could this affect your app?
Free first check from your website. Connect your repo for the full answer.
Any Windows machine with the affected WinSock driver is exposed to a local user who already has an account. The sources do not name affected Windows builds or the patch, so the team should check Microsoft's advisory for CVE-2026-88242. Systems where only trusted administrators log in carry less practical risk.
Not affected if no-local-accounts
Who cares windows, winsock
Unknown from the sources. In the analyst’s queue.
No fix yet, per the sources.
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
This page as .md · .json · CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
Check it with your coding agent
It reads this page and tells you if your code is affected.
Are you affected?
Ask from here. InfraStack checks the affected versions against your stack and answers in your inbox.
InfraStack checks the affected versions against your stack and answers in Slack, with the evidence and the fix.