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: 0.4%, top 70% 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
8.7
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.

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)
EPSS
29.9%
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 40× in last 7d / 97× 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. 2026-07-07 00:47 UTCEG score recompute
  2. 2026-07-07 00:47 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 13:51 UTCEG score recompute
  6. 2026-07-06 13:51 UTCGHSA enrichment
  7. 2026-07-06 02:23 UTCEPSS rescore
  8. 2026-07-06 02:23 UTCEPSS rescore
  9. 2026-07-06 02:03 UTCEG score recompute
  10. 2026-07-06 02:02 UTCGHSA enrichment
  11. 2026-07-05 15:06 UTCEG score recompute
  12. 2026-07-05 15:06 UTCGHSA enrichment
  13. 2026-07-05 04:07 UTCEG score recompute
  14. 2026-07-05 04:07 UTCGHSA enrichment
  15. 2026-07-05 02:31 UTCEPSS rescore
  16. 2026-07-05 02:30 UTCEPSS rescore
  17. 2026-07-04 16:53 UTCEG score recompute
  18. 2026-07-04 16:53 UTCGHSA enrichment
  19. 2026-07-04 06:31 UTCEPSS rescore
  20. 2026-07-04 06:31 UTCEPSS rescore
  21. 2026-07-04 05:29 UTCEG score recompute
  22. 2026-07-04 05:29 UTCGHSA enrichment
  23. 2026-07-03 18:31 UTCEG score recompute
  24. 2026-07-03 18:31 UTCGHSA enrichment
  25. 2026-07-03 07:35 UTCEG score recompute
Show 72 more
  1. 2026-07-03 07:35 UTCGHSA enrichment
  2. 2026-07-02 20:38 UTCEG score recompute
  3. 2026-07-02 20:38 UTCGHSA enrichment
  4. 2026-07-02 09:41 UTCEG score recompute
  5. 2026-07-02 09:40 UTCGHSA enrichment
  6. 2026-07-01 22:44 UTCEG score recompute
  7. 2026-07-01 22:44 UTCGHSA enrichment
  8. 2026-07-01 15:07 UTCEPSS rescore
  9. 2026-07-01 11:48 UTCEG score recompute
  10. 2026-07-01 11:48 UTCGHSA enrichment
  11. 2026-07-01 00:53 UTCEG score recompute
  12. 2026-07-01 00:53 UTCGHSA enrichment
  13. 2026-06-30 23:22 UTCEPSS rescore
  14. 2026-06-30 13:57 UTCEG score recompute
  15. 2026-06-30 13:56 UTCGHSA enrichment
  16. 2026-06-30 03:00 UTCEG score recompute
  17. 2026-06-30 03:00 UTCGHSA enrichment
  18. 2026-06-29 16:04 UTCEG score recompute
  19. 2026-06-29 16:04 UTCGHSA enrichment
  20. 2026-06-29 14:06 UTCEPSS rescore
  21. 2026-06-29 05:06 UTCEG score recompute
  22. 2026-06-29 05:06 UTCGHSA enrichment
  23. 2026-06-28 18:07 UTCEG score recompute
  24. 2026-06-28 18:07 UTCGHSA enrichment
  25. 2026-06-28 14:07 UTCEPSS rescore
  26. 2026-06-28 07:09 UTCEG score recompute
  27. 2026-06-28 07:09 UTCGHSA enrichment
  28. 2026-06-28 04:56 UTCEPSS rescore
  29. 2026-06-27 20:11 UTCEG score recompute
  30. 2026-06-27 20:11 UTCGHSA enrichment
  31. 2026-06-27 09:15 UTCEG score recompute
  32. 2026-06-27 09:15 UTCGHSA enrichment
  33. 2026-06-27 03:08 UTCEPSS rescore
  34. 2026-06-26 22:18 UTCEG score recompute
  35. 2026-06-26 22:18 UTCGHSA enrichment
  36. 2026-06-26 11:23 UTCEG score recompute
  37. 2026-06-26 11:23 UTCGHSA enrichment
  38. 2026-06-25 23:54 UTCEG score recompute
  39. 2026-06-25 23:54 UTCGHSA enrichment
  40. 2026-06-25 13:50 UTCEPSS rescore
  41. 2026-06-25 12:58 UTCEG score recompute
  42. 2026-06-25 12:57 UTCGHSA enrichment
  43. 2026-06-25 02:02 UTCEG score recompute
  44. 2026-06-25 02:02 UTCGHSA enrichment
  45. 2026-06-24 15:06 UTCEG score recompute
  46. 2026-06-24 15:06 UTCGHSA enrichment
  47. 2026-06-24 14:05 UTCEPSS rescore
  48. 2026-06-24 04:09 UTCEG score recompute
  49. 2026-06-24 04:09 UTCGHSA enrichment
  50. 2026-06-23 21:33 UTCEPSS rescore
  51. 2026-06-23 17:03 UTCEG score recompute
  52. 2026-06-23 17:03 UTCGHSA enrichment
  53. 2026-06-23 06:05 UTCEG score recompute
  54. 2026-06-23 06:05 UTCGHSA enrichment
  55. 2026-06-22 19:08 UTCEG score recompute
  56. 2026-06-22 19:08 UTCGHSA enrichment
  57. 2026-06-22 08:11 UTCEG score recompute
  58. 2026-06-22 08:11 UTCGHSA enrichment
  59. 2026-06-21 21:14 UTCEG score recompute
  60. 2026-06-21 21:14 UTCGHSA enrichment
  61. 2026-06-21 10:16 UTCEG score recompute
  62. 2026-06-21 10:16 UTCGHSA enrichment
  63. 2026-06-20 23:18 UTCEG score recompute
  64. 2026-06-20 23:18 UTCGHSA enrichment
  65. 2026-06-20 12:16 UTCEG score recompute
  66. 2026-06-20 12:16 UTCGHSA enrichment
  67. 2026-06-20 01:18 UTCEG score recompute
  68. 2026-06-20 01:18 UTCGHSA enrichment
  69. 2026-06-19 14:21 UTCEG score recompute
  70. 2026-06-19 14:20 UTCGHSA enrichment
  71. 2026-06-19 03:24 UTCEG score recompute
  72. 2026-06-19 03:23 UTCNVD updatefirst tracked

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 29.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-8805

Explore →

Is Your Infrastructure Affected by CVE-2026-8805?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs