CVE-2026-8806

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: 0.4%, top 71% 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
8.7
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.7Exploit: NoneExposed: 0

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

Expected Behavior Violation vulnerability in Mitsubishi Electric MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP all versions allows a remote attacker to cause a denial-of-service (DoS) condition in the affected product by continuously sending a large number of communication packets to the Ethernet port of the product in a short period of time, increasing the processing load of the product, preventing the internal anomaly-detection processing from being performed, and causing the communication function to stop.

CVSS v3
8.7
EG Score
8.7(medium)
EPSS
29.2%
KEV
Not listed

Published

June 19, 2026

Last Modified

June 22, 2026

Advisory Details (1)

Auto-updated Jun 19, 2026
Patch available. Sources: cisa.
cisa Patch Available

Mitsubishi Electric Co.'s MELSEC iQ-F Series FX5-ENET/IP Ethernet Module | CISA

https://www.cisa.gov/news-events/ics-advisories/icsa-26-169-06

Vendor Advisories for CVE-2026-8806(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 11× in last 7d / 84× 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. 2026-07-22 14:08 UTCEPSS rescore
  2. 2026-07-21 15:25 UTCEPSS rescore
  3. 2026-07-21 15:25 UTCEPSS rescore
  4. 2026-07-20 17:08 UTCEPSS rescore
  5. 2026-07-19 14:31 UTCEPSS rescore
  6. 2026-07-19 02:29 UTCEPSS rescore
  7. 2026-07-18 10:04 UTCEPSS rescore
  8. 2026-07-16 20:53 UTCGHSA enrichment
  9. 2026-07-16 17:03 UTCEPSS rescore
  10. 2026-07-16 08:29 UTCGHSA enrichment
  11. 2026-07-15 21:17 UTCGHSA enrichment
  12. 2026-07-15 16:57 UTCEPSS rescore
  13. 2026-07-15 10:00 UTCGHSA enrichment
  14. 2026-07-15 02:00 UTCEPSS rescore
  15. 2026-07-14 22:43 UTCGHSA enrichment
  16. 2026-07-14 11:28 UTCGHSA enrichment
  17. 2026-07-14 00:15 UTCGHSA enrichment
  18. 2026-07-13 22:31 UTCEPSS rescore
  19. 2026-07-13 13:02 UTCGHSA enrichment
  20. 2026-07-13 06:13 UTCEPSS rescore
  21. 2026-07-13 01:48 UTCGHSA enrichment
  22. 2026-07-12 14:35 UTCGHSA enrichment
  23. 2026-07-12 05:46 UTCEPSS rescore
  24. 2026-07-12 03:21 UTCGHSA enrichment
  25. 2026-07-11 16:09 UTCGHSA enrichment
Show 68 more
  1. 2026-07-11 08:27 UTCEPSS rescore
  2. 2026-07-11 04:57 UTCGHSA enrichment
  3. 2026-07-10 17:44 UTCGHSA enrichment
  4. 2026-07-10 06:32 UTCGHSA enrichment
  5. 2026-07-09 19:20 UTCGHSA enrichment
  6. 2026-07-09 19:10 UTCEPSS rescore
  7. 2026-07-09 08:05 UTCGHSA enrichment
  8. 2026-07-08 20:50 UTCGHSA enrichment
  9. 2026-07-08 09:38 UTCGHSA enrichment
  10. 2026-07-07 22:25 UTCGHSA enrichment
  11. 2026-07-07 11:13 UTCGHSA enrichment
  12. 2026-07-06 23:58 UTCGHSA enrichment
  13. 2026-07-06 16:27 UTCEPSS rescore
  14. 2026-07-06 16:27 UTCEPSS rescore
  15. 2026-07-06 12:46 UTCGHSA enrichment
  16. 2026-07-06 02:23 UTCEPSS rescore
  17. 2026-07-06 02:23 UTCEPSS rescore
  18. 2026-07-06 01:34 UTCGHSA enrichment
  19. 2026-07-05 14:20 UTCGHSA enrichment
  20. 2026-07-05 03:06 UTCGHSA enrichment
  21. 2026-07-05 02:31 UTCEPSS rescore
  22. 2026-07-05 02:30 UTCEPSS rescore
  23. 2026-07-04 15:50 UTCGHSA enrichment
  24. 2026-07-04 06:31 UTCEPSS rescore
  25. 2026-07-04 06:31 UTCEPSS rescore
  26. 2026-07-04 04:34 UTCGHSA enrichment
  27. 2026-07-03 16:49 UTCGHSA enrichment
  28. 2026-07-03 05:36 UTCGHSA enrichment
  29. 2026-07-02 18:08 UTCGHSA enrichment
  30. 2026-07-02 06:54 UTCGHSA enrichment
  31. 2026-07-01 19:42 UTCGHSA enrichment
  32. 2026-07-01 15:07 UTCEPSS rescore
  33. 2026-07-01 08:30 UTCGHSA enrichment
  34. 2026-06-30 23:22 UTCEPSS rescore
  35. 2026-06-30 21:13 UTCGHSA enrichment
  36. 2026-06-30 10:00 UTCGHSA enrichment
  37. 2026-06-29 22:46 UTCGHSA enrichment
  38. 2026-06-29 14:06 UTCEPSS rescore
  39. 2026-06-29 11:33 UTCGHSA enrichment
  40. 2026-06-29 00:21 UTCGHSA enrichment
  41. 2026-06-28 14:07 UTCEPSS rescore
  42. 2026-06-28 13:09 UTCGHSA enrichment
  43. 2026-06-28 04:56 UTCEPSS rescore
  44. 2026-06-28 01:56 UTCGHSA enrichment
  45. 2026-06-27 14:44 UTCGHSA enrichment
  46. 2026-06-27 03:32 UTCGHSA enrichment
  47. 2026-06-27 03:08 UTCEPSS rescore
  48. 2026-06-26 16:18 UTCGHSA enrichment
  49. 2026-06-26 05:07 UTCGHSA enrichment
  50. 2026-06-25 17:55 UTCGHSA enrichment
  51. 2026-06-25 13:50 UTCEPSS rescore
  52. 2026-06-25 06:39 UTCGHSA enrichment
  53. 2026-06-24 19:24 UTCGHSA enrichment
  54. 2026-06-24 14:05 UTCEPSS rescore
  55. 2026-06-24 07:41 UTCGHSA enrichment
  56. 2026-06-23 21:33 UTCEPSS rescore
  57. 2026-06-23 20:12 UTCGHSA enrichment
  58. 2026-06-23 08:54 UTCGHSA enrichment
  59. 2026-06-22 21:36 UTCGHSA enrichment
  60. 2026-06-22 10:22 UTCGHSA enrichment
  61. 2026-06-21 23:09 UTCGHSA enrichment
  62. 2026-06-21 11:49 UTCGHSA enrichment
  63. 2026-06-21 00:29 UTCGHSA enrichment
  64. 2026-06-20 13:15 UTCGHSA enrichment
  65. 2026-06-20 02:02 UTCGHSA enrichment
  66. 2026-06-19 14:40 UTCGHSA enrichment
  67. 2026-06-19 03:24 UTCEG score recompute
  68. 2026-06-19 03:23 UTCNVD updatefirst tracked

Frequently asked(5)

What is CVE-2026-8806?
CVE-2026-8806 is a high vulnerability published on June 19, 2026. Expected Behavior Violation vulnerability in Mitsubishi Electric MELSEC iQ-F Series FX5-ENET/IP Ethernet Module FX5-ENET/IP all versions allows a remote attacker to cause a denial-of-service (DoS) condition in the affected product by continuously sending a large number of communication packets to…
When was CVE-2026-8806 disclosed?
CVE-2026-8806 was first published in the National Vulnerability Database on June 19, 2026, with the most recent update on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8806 actively exploited?
CVE-2026-8806 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 29.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8806?
CVE-2026-8806 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-8806?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8806, 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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