CVE-2026-119899 · Infrastructure
NO FIX YET
Windows Win32K has an improper access control flaw that lets an authorized local attacker raise their privileges. The attacker needs an existing account on the machine and gets elevated rights on that system.
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 where someone already has a local account can be exposed, since the flaw is triggered from the machine itself. Shared workstations, terminal servers and multi-user hosts carry the most risk. Systems where every user is fully trusted are lower priority but still need the patch.
Not affected if single-user-trusted-machines
Who cares win32k, windows
winver and compare it to the fixed build in Microsoft's security update guide for CVE-2026-119899.No fix yet, per the sources.
Improper access control in Windows Win32K allows an authorized attacker to elevate privileges locally.
This page as .md · .json · CVSS:3.1/AV:L/AC:L/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.