CVE-2026-9624

HIGHPre-NVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 76% 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
8.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.7Exploit: None knownExposed: 0

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

A denial-of-service security issue exists within RSLinx® Classic. A crafted CIP packet can cause the RSLinx® Classic service to crash due to insufficient data length validation, requiring a  restart of the service to recover.

CVSS v3
8.7
EG Score
8.7(medium)
EG Risk
54(Track)
EG Risk 54/100SSVC: 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
Severity87% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
24%
KEV
Not listed

Published

September 1, 2026

Last Modified

September 1, 2026

Advisory Details (1)

Auto-updated Sep 1, 2026
No patch confirmed yet.
generic

SD1794 | Security Advisory | Rockwell Automation | US

https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1794.html

Vendor Advisories for CVE-2026-9624(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 27× in last 7d / 73× 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. 2026-09-19 17:15 UTCEG score recompute
  2. 2026-09-19 17:15 UTCGHSA enrichment
  3. 2026-09-19 04:59 UTCEG score recompute
  4. 2026-09-19 04:59 UTCGHSA enrichment
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 16:43 UTCGHSA enrichment
  7. 2026-09-18 04:27 UTCEG score recompute
  8. 2026-09-18 04:27 UTCGHSA enrichment
  9. 2026-09-17 19:32 UTCEPSS rescore
  10. 2026-09-17 16:11 UTCGHSA enrichment
  11. 2026-09-17 03:55 UTCGHSA enrichment
  12. 2026-09-16 15:39 UTCEG score recompute
  13. 2026-09-16 15:39 UTCGHSA enrichment
  14. 2026-09-16 14:09 UTCEPSS rescore
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-16 03:23 UTCGHSA enrichment
  17. 2026-09-15 15:06 UTCEG score recompute
  18. 2026-09-15 15:06 UTCGHSA enrichment
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 02:49 UTCGHSA enrichment
  21. 2026-09-14 14:33 UTCGHSA enrichment
  22. 2026-09-14 02:14 UTCEG score recompute
  23. 2026-09-14 02:14 UTCGHSA enrichment
  24. 2026-09-13 16:48 UTCEPSS rescore
  25. 2026-09-13 13:58 UTCGHSA enrichment
Show 48 more
  1. 2026-09-13 01:42 UTCEG score recompute
  2. 2026-09-13 01:42 UTCGHSA enrichment
  3. 2026-09-12 15:02 UTCEPSS rescore
  4. 2026-09-12 13:26 UTCGHSA enrichment
  5. 2026-09-12 01:10 UTCEG score recompute
  6. 2026-09-12 01:10 UTCGHSA enrichment
  7. 2026-09-11 14:53 UTCEPSS rescore
  8. 2026-09-11 12:54 UTCEG score recompute
  9. 2026-09-11 12:54 UTCGHSA enrichment
  10. 2026-09-11 09:38 UTCEPSS rescore
  11. 2026-09-11 00:29 UTCGHSA enrichment
  12. 2026-09-10 12:13 UTCEG score recompute
  13. 2026-09-10 12:13 UTCGHSA enrichment
  14. 2026-09-10 09:35 UTCEPSS rescore
  15. 2026-09-09 23:57 UTCGHSA enrichment
  16. 2026-09-09 11:41 UTCGHSA enrichment
  17. 2026-09-08 23:24 UTCEG score recompute
  18. 2026-09-08 23:24 UTCGHSA enrichment
  19. 2026-09-08 22:01 UTCEPSS rescore
  20. 2026-09-08 03:11 UTCGHSA enrichment
  21. 2026-09-07 14:55 UTCGHSA enrichment
  22. 2026-09-07 00:36 UTCEG score recompute
  23. 2026-09-07 00:36 UTCGHSA enrichment
  24. 2026-09-06 13:48 UTCEPSS rescore
  25. 2026-09-06 12:19 UTCGHSA enrichment
  26. 2026-09-06 00:03 UTCEG score recompute
  27. 2026-09-06 00:03 UTCGHSA enrichment
  28. 2026-09-05 15:31 UTCEPSS rescore
  29. 2026-09-05 11:45 UTCGHSA enrichment
  30. 2026-09-04 23:27 UTCEG score recompute
  31. 2026-09-04 23:27 UTCGHSA enrichment
  32. 2026-09-04 10:22 UTCEG score recompute
  33. 2026-09-04 10:22 UTCGHSA enrichment
  34. 2026-09-04 05:07 UTCEPSS rescore
  35. 2026-09-03 22:06 UTCGHSA enrichment
  36. 2026-09-03 09:49 UTCGHSA enrichment
  37. 2026-09-02 21:32 UTCEG score recompute
  38. 2026-09-02 21:32 UTCGHSA enrichment
  39. 2026-09-02 14:12 UTCEPSS rescore
  40. 2026-09-02 09:16 UTCGHSA enrichment
  41. 2026-09-01 20:58 UTCGHSA enrichment
  42. 2026-09-01 16:26 UTCEG score recompute
  43. 2026-09-01 16:26 UTCGHSA enrichment
  44. 2026-09-01 16:10 UTCEG score recompute
  45. 2026-09-01 16:10 UTCGHSA enrichment
  46. 2026-09-01 14:34 UTCEG score recompute
  47. 2026-09-01 13:46 UTCEG score recompute
  48. 2026-09-01 13:44 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-9624?
CVE-2026-9624 is a high vulnerability published on September 1, 2026. A denial-of-service security issue exists within RSLinx® Classic. A crafted CIP packet can cause the RSLinx® Classic service to crash due to insufficient data length validation, requiring a restart of the service to recover.
When was CVE-2026-9624 disclosed?
CVE-2026-9624 was first published in the National Vulnerability Database on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9624 actively exploited?
CVE-2026-9624 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 75.8% of all scored CVEs.
What is the CVSS score of CVE-2026-9624?
CVE-2026-9624 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-9624?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9624, 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-2026-9624

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