CVE-2026-8805

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: 0.6%, top 53% 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: 1%CVSS: 8.7Exploit: None knownExposed: 0

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

Integer Overflow or Wraparound vulnerability in the EtherNet/IP function of Mitsubishi Electric MELSEC iQ-F Series FX5-EIP EtherNet/IP module FX5-EIP versions 1.000 and prior allows a remote attacker to cause a denial-of-service (DoS) condition in the affected product by rapidly establishing a large number of TCP connections to it, resulting in an inconsistency in the product's internal connection management process and triggering improper memory access.

CVSS v3
8.7
EG Score
8.7(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
47%
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 MELSEC iQ-F Series | CISA

https://www.cisa.gov/news-events/ics-advisories/icsa-26-169-05

Vendor Advisories for CVE-2026-8805(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 16× in last 7d / 81× 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.

Showing the most recent 100 of 111 total refreshes for this CVE.

  1. 2026-07-29 01:43 UTCEG score recompute
  2. 2026-07-29 01:42 UTCGHSA enrichment
  3. 2026-07-28 15:37 UTCEPSS rescore
  4. 2026-07-28 06:02 UTCGHSA enrichment
  5. 2026-07-27 18:05 UTCEG score recompute
  6. 2026-07-27 18:05 UTCGHSA enrichment
  7. 2026-07-27 14:14 UTCEPSS rescore
  8. 2026-07-27 06:55 UTCGHSA enrichment
  9. 2026-07-26 17:06 UTCEG score recompute
  10. 2026-07-26 17:06 UTCGHSA enrichment
  11. 2026-07-26 14:54 UTCEPSS rescore
  12. 2026-07-25 14:18 UTCEPSS rescore
  13. 2026-07-24 14:18 UTCEPSS rescore
  14. 2026-07-23 14:18 UTCEPSS rescore
  15. 2026-07-23 03:23 UTCEG score recompute
  16. 2026-07-22 14:08 UTCEPSS rescore
  17. 2026-07-21 15:25 UTCEPSS rescore
  18. 2026-07-21 15:25 UTCEPSS rescore
  19. 2026-07-20 17:08 UTCEPSS rescore
  20. 2026-07-19 14:31 UTCEPSS rescore
  21. 2026-07-19 02:29 UTCEPSS rescore
  22. 2026-07-18 10:04 UTCEPSS rescore
  23. 2026-07-16 20:54 UTCGHSA enrichment
  24. 2026-07-16 17:03 UTCEPSS rescore
  25. 2026-07-16 05:10 UTCGHSA enrichment
Show 75 more
  1. 2026-07-15 18:14 UTCGHSA enrichment
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 06:46 UTCGHSA enrichment
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-14 19:51 UTCGHSA enrichment
  6. 2026-07-14 08:55 UTCGHSA enrichment
  7. 2026-07-13 22:31 UTCEPSS rescore
  8. 2026-07-13 21:18 UTCGHSA enrichment
  9. 2026-07-13 10:19 UTCGHSA enrichment
  10. 2026-07-13 06:13 UTCEPSS rescore
  11. 2026-07-12 23:18 UTCGHSA enrichment
  12. 2026-07-12 12:20 UTCGHSA enrichment
  13. 2026-07-12 05:46 UTCEPSS rescore
  14. 2026-07-12 01:23 UTCGHSA enrichment
  15. 2026-07-11 14:27 UTCGHSA enrichment
  16. 2026-07-11 08:27 UTCEPSS rescore
  17. 2026-07-11 03:16 UTCGHSA enrichment
  18. 2026-07-10 16:20 UTCGHSA enrichment
  19. 2026-07-10 05:23 UTCGHSA enrichment
  20. 2026-07-09 19:10 UTCEPSS rescore
  21. 2026-07-09 18:25 UTCGHSA enrichment
  22. 2026-07-09 07:27 UTCGHSA enrichment
  23. 2026-07-08 20:30 UTCGHSA enrichment
  24. 2026-07-08 15:16 UTCEPSS rescore
  25. 2026-07-08 09:34 UTCGHSA enrichment
  26. 2026-07-07 22:39 UTCGHSA enrichment
  27. 2026-07-07 13:46 UTCEPSS rescore
  28. 2026-07-07 11:43 UTCGHSA enrichment
  29. 2026-07-07 00:47 UTCGHSA enrichment
  30. 2026-07-06 16:27 UTCEPSS rescore
  31. 2026-07-06 16:27 UTCEPSS rescore
  32. 2026-07-06 13:51 UTCGHSA enrichment
  33. 2026-07-06 02:23 UTCEPSS rescore
  34. 2026-07-06 02:23 UTCEPSS rescore
  35. 2026-07-06 02:02 UTCGHSA enrichment
  36. 2026-07-05 15:06 UTCGHSA enrichment
  37. 2026-07-05 04:07 UTCGHSA enrichment
  38. 2026-07-05 02:31 UTCEPSS rescore
  39. 2026-07-05 02:30 UTCEPSS rescore
  40. 2026-07-04 16:53 UTCGHSA enrichment
  41. 2026-07-04 06:31 UTCEPSS rescore
  42. 2026-07-04 06:31 UTCEPSS rescore
  43. 2026-07-04 05:29 UTCGHSA enrichment
  44. 2026-07-03 18:31 UTCGHSA enrichment
  45. 2026-07-03 07:35 UTCGHSA enrichment
  46. 2026-07-02 20:38 UTCGHSA enrichment
  47. 2026-07-02 09:40 UTCGHSA enrichment
  48. 2026-07-01 22:44 UTCGHSA enrichment
  49. 2026-07-01 15:07 UTCEPSS rescore
  50. 2026-07-01 11:48 UTCGHSA enrichment
  51. 2026-07-01 00:53 UTCGHSA enrichment
  52. 2026-06-30 23:22 UTCEPSS rescore
  53. 2026-06-30 13:56 UTCGHSA enrichment
  54. 2026-06-30 03:00 UTCGHSA enrichment
  55. 2026-06-29 16:04 UTCGHSA enrichment
  56. 2026-06-29 14:06 UTCEPSS rescore
  57. 2026-06-29 05:06 UTCGHSA enrichment
  58. 2026-06-28 18:07 UTCGHSA enrichment
  59. 2026-06-28 14:07 UTCEPSS rescore
  60. 2026-06-28 07:09 UTCGHSA enrichment
  61. 2026-06-28 04:56 UTCEPSS rescore
  62. 2026-06-27 20:11 UTCGHSA enrichment
  63. 2026-06-27 09:15 UTCGHSA enrichment
  64. 2026-06-27 03:08 UTCEPSS rescore
  65. 2026-06-26 22:18 UTCGHSA enrichment
  66. 2026-06-26 11:23 UTCGHSA enrichment
  67. 2026-06-25 23:54 UTCGHSA enrichment
  68. 2026-06-25 13:50 UTCEPSS rescore
  69. 2026-06-25 12:57 UTCGHSA enrichment
  70. 2026-06-25 02:02 UTCGHSA enrichment
  71. 2026-06-24 15:06 UTCGHSA enrichment
  72. 2026-06-24 14:05 UTCEPSS rescore
  73. 2026-06-24 04:09 UTCGHSA enrichment
  74. 2026-06-23 21:33 UTCEPSS rescore
  75. 2026-06-23 17:03 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8805?
CVE-2026-8805 is a high vulnerability published on June 19, 2026. Integer Overflow or Wraparound vulnerability in the EtherNet/IP function of Mitsubishi Electric MELSEC iQ-F Series FX5-EIP EtherNet/IP module FX5-EIP versions 1.000 and prior allows a remote attacker to cause a denial-of-service (DoS) condition in the affected product by rapidly establishing a…
When was CVE-2026-8805 disclosed?
CVE-2026-8805 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-2026-8805 actively exploited?
CVE-2026-8805 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 53.1% of all scored CVEs.
What is the CVSS score of CVE-2026-8805?
CVE-2026-8805 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-8805?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8805, 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.

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