CVE-2026-105501 · Infrastructure
NO FIX YET
Windows Installer has an incorrect authorization check that lets a logged-in user with limited rights elevate their privileges on the same machine. An attacker who already has a local account can gain higher-level control of the 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 with the Windows Installer service is in scope, since the flaw is in the component itself. An attacker needs a local account on the machine first, so exposure is mainly a concern on shared or multi-user systems. The sources do not say which Windows versions are affected or what the fixed build is.
Not affected if no-local-untrusted-users
Who cares windows, windows-installer
Unknown from the sources. In the analyst’s queue.
No fix yet, per the sources.
Incorrect authorization in Windows Installer 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.