CVE-2026-42958

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-07-08. a secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

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

The application contains a use-after-free vulnerability that can be exploited to cause memory corruption while parsing specially crafted files. This could allow an attacker to execute arbitrary code in the context of the current process.

CVSS v3
7.8
EG Score
7.8(high)
EPSS
2.9%
KEV
Not listed

Published

July 7, 2026

Last Modified

July 9, 2026

Advisory Details (1)

Auto-updated Jul 7, 2026
Patch available. Sources: cisa.
cisa Patch Available

Labcenter Proteus 9 | CISA

https://www.cisa.gov/news-events/ics-advisories/icsa-26-188-06

Vendor Advisories for CVE-2026-42958(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 37× in last 7d / 44× 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. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEG score recompute
  3. 2026-07-15 16:57 UTCGHSA enrichment
  4. 2026-07-15 05:59 UTCEG score recompute
  5. 2026-07-15 05:59 UTCGHSA enrichment
  6. 2026-07-15 02:00 UTCEPSS rescore
  7. 2026-07-14 18:46 UTCEG score recompute
  8. 2026-07-14 18:46 UTCGHSA enrichment
  9. 2026-07-14 07:47 UTCEG score recompute
  10. 2026-07-14 07:47 UTCGHSA enrichment
  11. 2026-07-13 22:30 UTCEPSS rescore
  12. 2026-07-13 20:40 UTCEG score recompute
  13. 2026-07-13 20:40 UTCGHSA enrichment
  14. 2026-07-13 09:42 UTCEG score recompute
  15. 2026-07-13 09:42 UTCGHSA enrichment
  16. 2026-07-13 06:13 UTCEPSS rescore
  17. 2026-07-12 22:44 UTCEG score recompute
  18. 2026-07-12 22:44 UTCGHSA enrichment
  19. 2026-07-12 11:46 UTCEG score recompute
  20. 2026-07-12 11:46 UTCGHSA enrichment
  21. 2026-07-12 05:46 UTCEPSS rescore
  22. 2026-07-12 00:48 UTCEG score recompute
  23. 2026-07-12 00:48 UTCGHSA enrichment
  24. 2026-07-11 13:50 UTCEG score recompute
  25. 2026-07-11 13:50 UTCGHSA enrichment
Show 19 more
  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-11 02:52 UTCEG score recompute
  3. 2026-07-11 02:52 UTCGHSA enrichment
  4. 2026-07-10 15:54 UTCEG score recompute
  5. 2026-07-10 15:54 UTCGHSA enrichment
  6. 2026-07-10 04:55 UTCEG score recompute
  7. 2026-07-10 04:55 UTCGHSA enrichment
  8. 2026-07-09 19:10 UTCEPSS rescore
  9. 2026-07-09 17:55 UTCEG score recompute
  10. 2026-07-09 17:55 UTCGHSA enrichment
  11. 2026-07-09 06:57 UTCEG score recompute
  12. 2026-07-09 06:57 UTCGHSA enrichment
  13. 2026-07-08 20:00 UTCEG score recompute
  14. 2026-07-08 20:00 UTCGHSA enrichment
  15. 2026-07-08 15:16 UTCEPSS rescore
  16. 2026-07-08 09:00 UTCEG score recompute
  17. 2026-07-08 09:00 UTCGHSA enrichment
  18. 2026-07-07 22:03 UTCEG score recompute
  19. 2026-07-07 22:01 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-42958?
CVE-2026-42958 is a high vulnerability published on July 7, 2026. The application contains a use-after-free vulnerability that can be exploited to cause memory corruption while parsing specially crafted files. This could allow an attacker to execute arbitrary code in the context of the current process.
When was CVE-2026-42958 disclosed?
CVE-2026-42958 was first published in the National Vulnerability Database on July 7, 2026, with the most recent update on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42958 actively exploited?
CVE-2026-42958 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42958?
CVE-2026-42958 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-42958?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42958, 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-2026-42958

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