Vulnerability · Published Jul 23, 2026 · Assigned by suse
CVE-2026-59678portprotonqt allows any users to mount and unmount arbitrary file systems and modify the network configuration via NetworkManager
High 7.1
In plain English
A high-severity incorrect authorization in PortProtonQt from Linux-Gaming. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).
Severity (CVSS 4.0)7.1High
Exploit odds (30 days)0.2%top 95.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Linux-Gaming | PortProtonQt | 0 – before 0d0f0950ebd948cdf82e8c3e1ebd2bcb9b8bafbe |
Weakness: CWE-863 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N