CVE-2026-59678 | BDVDB-2026-352007 Detail

Linux-GamingPortProtonQt

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.

Impact#

Per CVSS v4.0: confidentiality impact low, integrity impact high, availability impact high. Attack vector: local.

Weaknesses#

CWE-863 Incorrect Authorization

References#

https://bugzilla.suse.com/show_bug.cgi?id=CVE-2026-59678

Exploit#

No public exploit known

History#

Version 12026-07-23Record published in the CVE List.

Published

Published: 2026-07-23
Last modified: 2026-07-23

Vendor information

Vendor: Linux-Gaming
Product: PortProtonQt

All Linux-Gaming vulnerabilities

Score

7.1 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 5.0.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Incorrect Authorization

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 0d0f0950ebd948cdf82e8c3e1ebd2bcb9b8bafbe
Fixed
0d0f0950ebd948cdf82e8c3e1ebd2bcb9b8bafbe

Scoring System

CVSS v4.0

7.1 High

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

Metric breakdown
Attack Vector	Local
Attack Complexity	Low
Attack Requirements	None
Privileges Required	None
User Interaction	None
Vulnerable System Confidentiality	Low
Vulnerable System Integrity	High
Vulnerable System Availability	High
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).