CVE-2026-42953

HIGHPre-NVD 8.48.4—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 96% 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
8.4
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.4Exploit: NoneExposed: 0

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

The application contains an out-of-bounds write vulnerability that can be exploited by an attacker to cause the program to write data past the end of an allocated memory buffer. This can lead to arbitrary code execution.

CVSS v3
8.4
EG Score
8.4(medium)
EPSS
3.8%
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-2026-42953(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 33× in last 7d / 40× 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 15:34 UTCEG score recompute
  3. 2026-07-15 15:34 UTCGHSA enrichment
  4. 2026-07-15 03:13 UTCEG score recompute
  5. 2026-07-15 03:13 UTCGHSA enrichment
  6. 2026-07-15 02:00 UTCEPSS rescore
  7. 2026-07-14 14:51 UTCEG score recompute
  8. 2026-07-14 14:51 UTCGHSA enrichment
  9. 2026-07-14 02:29 UTCEG score recompute
  10. 2026-07-14 02:29 UTCGHSA enrichment
  11. 2026-07-13 22:30 UTCEPSS rescore
  12. 2026-07-13 14:07 UTCEG score recompute
  13. 2026-07-13 14:06 UTCGHSA enrichment
  14. 2026-07-13 06:13 UTCEPSS rescore
  15. 2026-07-13 01:44 UTCEG score recompute
  16. 2026-07-13 01:44 UTCGHSA enrichment
  17. 2026-07-12 13:22 UTCEG score recompute
  18. 2026-07-12 13:22 UTCGHSA enrichment
  19. 2026-07-12 05:46 UTCEPSS rescore
  20. 2026-07-12 01:00 UTCEG score recompute
  21. 2026-07-12 01:00 UTCGHSA enrichment
  22. 2026-07-11 12:38 UTCEG score recompute
  23. 2026-07-11 12:38 UTCGHSA enrichment
  24. 2026-07-11 08:27 UTCEPSS rescore
  25. 2026-07-11 00:16 UTCEG score recompute
Show 15 more
  1. 2026-07-11 00:16 UTCGHSA enrichment
  2. 2026-07-10 11:52 UTCEG score recompute
  3. 2026-07-10 11:52 UTCGHSA enrichment
  4. 2026-07-09 23:30 UTCEG score recompute
  5. 2026-07-09 23:30 UTCGHSA enrichment
  6. 2026-07-09 19:10 UTCEPSS rescore
  7. 2026-07-09 11:08 UTCEG score recompute
  8. 2026-07-09 11:08 UTCGHSA enrichment
  9. 2026-07-08 22:46 UTCEG score recompute
  10. 2026-07-08 22:46 UTCGHSA enrichment
  11. 2026-07-08 15:16 UTCEPSS rescore
  12. 2026-07-08 10:24 UTCEG score recompute
  13. 2026-07-08 10:24 UTCGHSA enrichment
  14. 2026-07-07 22:02 UTCEG score recompute
  15. 2026-07-07 22:01 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-42953?
CVE-2026-42953 is a high vulnerability published on July 7, 2026. The application contains an out-of-bounds write vulnerability that can be exploited by an attacker to cause the program to write data past the end of an allocated memory buffer. This can lead to arbitrary code execution.
When was CVE-2026-42953 disclosed?
CVE-2026-42953 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-2026-42953 actively exploited?
CVE-2026-42953 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 3.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42953?
CVE-2026-42953 has a CVSS v3 base score of 8.4 (NVD).
How do I remediate CVE-2026-42953?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42953, 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

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