CVE-2026-59678: Linux-Gaming Portprotonqt

High severity, CVSS 7.1. EPSS: 0.2% chance of exploitation in the next 30 days.

An Incorrect Authorization vulnerability in Linux-Gaming PortProtonQt allows any users to mount and unmount arbitrary file systems and modify the network configuration via NetworkManager. This issue affects PortProtonQt before 0d0f0950ebd948cdf82e8c3e1ebd2bcb9b8bafbe.

Affected products

• Linux-Gaming Portprotonqt

Published 2026-07-23. Last modified 2026-07-23.