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CVE-2026-59678

High

Description

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.

SeverityHigh
CVSS7.1
Exploit probability—
ProductPortProtonQt
PublishedJul 23, 2026
First seenJul 23, 2026
Weakness typeCWE-863Incorrect authorization

How to fix

Update
  • Linux-Gaming PortProtonQt0d0f0950ebd948cdf82e8c3e1ebd2bcb9b8bafbe or later

Affected products

ProductAffected versionsFixed in
Linux-Gaming PortProtonQtv < 0d0f0950ebd948cdf82e8c3e1ebd2bcb9b8bafbe0d0f0950ebd948cdf82e8c3e1ebd2bcb9b8bafbe

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