CVE-2026-105507 · Infrastructure
NO FIX YET
Windows Installer fails to sanitize input, which leads to insecure library loading. A locally logged-in attacker can run arbitrary code with elevated system privileges and then install programs, change or delete data, or create accounts with full rights.
first public Nov 10, 2026 · 1 source
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Any Windows machine where a person can sign in locally can be exposed, since the attacker must already have a local account. The sources do not name affected Windows builds or the update's identifier, so the exact versions are unknown. Systems where only trusted administrators sign in are at lower practical risk.
Not affected if no-local-users
Who cares windows, windows-installer
Unknown from the sources. In the analyst’s queue.
Unknown from the sources.
An elevation of privilege vulnerability exists in the Windows Installer when the Windows Installer fails to properly sanitize input leading to an insecure library loading behavior. A locally authenticated attacker could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. The security update addresses the vulnerability by correcting the input sanitization error to preclude unintended elevation.
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.
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