CVE-2026-59678

HIGHPre-NVD 7.17.1
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 98% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

July 23, 2026

Last Modified

July 23, 2026

Advisory Details (1)

Auto-updated Jul 23, 2026
No patch confirmed yet.
generic

1270218 – (CVE-2026-59678) AUDIT-TRACKER: CVE-2026-59678: portprotonqt: review of polkit rules ru.linux_gaming.PortProtonQt.rules

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

Vendor Advisories for CVE-2026-59678(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 25× in last 7d / 29× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-30 22:01 UTCEG score recompute
  2. 2026-07-30 22:00 UTCGHSA enrichment
  3. 2026-07-30 16:28 UTCEPSS rescore
  4. 2026-07-30 09:19 UTCEG score recompute
  5. 2026-07-30 09:19 UTCGHSA enrichment
  6. 2026-07-30 01:30 UTCEPSS rescore
  7. 2026-07-30 01:30 UTCEPSS rescore
  8. 2026-07-29 20:36 UTCGHSA enrichment
  9. 2026-07-29 07:44 UTCGHSA enrichment
  10. 2026-07-28 18:55 UTCEG score recompute
  11. 2026-07-28 18:55 UTCGHSA enrichment
  12. 2026-07-28 15:37 UTCEPSS rescore
  13. 2026-07-28 06:12 UTCGHSA enrichment
  14. 2026-07-27 17:30 UTCEG score recompute
  15. 2026-07-27 17:30 UTCGHSA enrichment
  16. 2026-07-27 14:14 UTCEPSS rescore
  17. 2026-07-27 04:48 UTCGHSA enrichment
  18. 2026-07-26 16:02 UTCEG score recompute
  19. 2026-07-26 16:02 UTCGHSA enrichment
  20. 2026-07-26 03:20 UTCEG score recompute
  21. 2026-07-26 03:20 UTCGHSA enrichment
  22. 2026-07-25 14:18 UTCEPSS rescore
  23. 2026-07-25 14:18 UTCEPSS rescore
  24. 2026-07-24 14:18 UTCEPSS rescore
  25. 2026-07-24 14:18 UTCEPSS rescore
Show 4 more
  1. 2026-07-23 14:18 UTCEPSS rescore
  2. 2026-07-23 14:18 UTCEPSS rescore
  3. 2026-07-23 07:40 UTCEG score recompute
  4. 2026-07-23 07:39 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-59678?
CVE-2026-59678 is a high vulnerability published on July 23, 2026. 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.
When was CVE-2026-59678 disclosed?
CVE-2026-59678 was first published in the National Vulnerability Database on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-59678 actively exploited?
CVE-2026-59678 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.1% of all scored CVEs.
What is the CVSS score of CVE-2026-59678?
CVE-2026-59678 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-59678?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-59678, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-59678

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