CVE-2026-51219

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 60% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: Elevated riskExposed: 0

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

A heap buffer overflow in the HighPriorityASDUQueue_hasUnconfirmedIMessages function of lib60870 v2.3.3 to v2.3.6 allows attackers to cause a Denial of Service (DoS) via a crafted payload.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: 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
Severity75% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
40%
KEV
Not listed

Published

June 29, 2026

Last Modified

August 4, 2026

Advisory Details (3)

Auto-updated Jun 30, 2026
No patch confirmed yet.
generic

Heap-buffer-overflow in `HighPriorityASDUQueue_hasUnconfirmedIMessages` due to inconsistent high-priority queue entry format in v2.3.6 · Issue #196 · mz-automation/lib60870 · GitHub

https://github.com/mz-automation/lib60870/issues/196
generic

Releases · mz-automation/lib60870 · GitHub

https://github.com/mz-automation/lib60870/releases
generic

GitHub - mz-automation/lib60870: Official repository for lib60870 an implementation of the IEC 60870-5-101/104 protocol (read-only mirror) · GitHub

https://github.com/mz-automation/lib60870

Vendor Advisories for CVE-2026-51219(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 7× in last 7d / 65× 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 184 total refreshes for this CVE.

  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-10 09:35 UTCEPSS rescore
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-07 16:01 UTCEPSS rescore
  5. 2026-09-06 14:48 UTCEG score recompute
  6. 2026-09-06 14:48 UTCGHSA enrichment
  7. 2026-09-06 13:47 UTCEPSS rescore
  8. 2026-09-04 05:06 UTCEPSS rescore
  9. 2026-09-02 14:12 UTCEPSS rescore
  10. 2026-09-01 13:54 UTCEPSS rescore
  11. 2026-09-01 04:40 UTCEPSS rescore
  12. 2026-08-30 19:17 UTCEPSS rescore
  13. 2026-08-30 19:09 UTCEG score recompute
  14. 2026-08-30 19:09 UTCGHSA enrichment
  15. 2026-08-30 01:22 UTCEPSS rescore
  16. 2026-08-28 21:41 UTCEPSS rescore
  17. 2026-08-27 22:50 UTCEG score recompute
  18. 2026-08-27 22:50 UTCGHSA enrichment
  19. 2026-08-27 14:25 UTCEPSS rescore
  20. 2026-08-26 14:46 UTCEPSS rescore
  21. 2026-08-25 13:49 UTCEPSS rescore
  22. 2026-08-24 21:46 UTCEG score recompute
  23. 2026-08-24 21:46 UTCGHSA enrichment
  24. 2026-08-24 05:32 UTCGHSA enrichment
  25. 2026-08-23 18:35 UTCGHSA enrichment
Show 75 more
  1. 2026-08-23 07:45 UTCEG score recompute
  2. 2026-08-23 07:45 UTCGHSA enrichment
  3. 2026-08-23 00:19 UTCEPSS rescore
  4. 2026-08-22 20:56 UTCGHSA enrichment
  5. 2026-08-22 09:13 UTCEG score recompute
  6. 2026-08-22 09:13 UTCGHSA enrichment
  7. 2026-08-21 23:49 UTCEPSS rescore
  8. 2026-08-21 15:49 UTCGHSA enrichment
  9. 2026-08-21 04:54 UTCEG score recompute
  10. 2026-08-21 04:54 UTCGHSA enrichment
  11. 2026-08-20 22:55 UTCEPSS rescore
  12. 2026-08-20 16:56 UTCGHSA enrichment
  13. 2026-08-20 05:58 UTCEG score recompute
  14. 2026-08-20 05:58 UTCGHSA enrichment
  15. 2026-08-19 17:04 UTCEPSS rescore
  16. 2026-08-19 10:27 UTCGHSA enrichment
  17. 2026-08-18 23:22 UTCEG score recompute
  18. 2026-08-18 23:22 UTCGHSA enrichment
  19. 2026-08-18 13:48 UTCEPSS rescore
  20. 2026-08-17 13:47 UTCEPSS rescore
  21. 2026-08-17 11:49 UTCGHSA enrichment
  22. 2026-08-17 00:50 UTCEG score recompute
  23. 2026-08-17 00:50 UTCGHSA enrichment
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 14:00 UTCGHSA enrichment
  26. 2026-08-16 03:10 UTCEG score recompute
  27. 2026-08-16 03:10 UTCGHSA enrichment
  28. 2026-08-16 02:14 UTCEPSS rescore
  29. 2026-08-15 16:21 UTCGHSA enrichment
  30. 2026-08-15 05:31 UTCEG score recompute
  31. 2026-08-15 05:31 UTCGHSA enrichment
  32. 2026-08-15 01:30 UTCEPSS rescore
  33. 2026-08-14 18:41 UTCGHSA enrichment
  34. 2026-08-14 07:46 UTCEG score recompute
  35. 2026-08-14 07:46 UTCGHSA enrichment
  36. 2026-08-13 22:00 UTCEPSS rescore
  37. 2026-08-13 20:56 UTCGHSA enrichment
  38. 2026-08-13 10:07 UTCGHSA enrichment
  39. 2026-08-12 23:17 UTCEG score recompute
  40. 2026-08-12 23:17 UTCGHSA enrichment
  41. 2026-08-12 13:51 UTCEPSS rescore
  42. 2026-08-12 12:28 UTCGHSA enrichment
  43. 2026-08-12 01:38 UTCGHSA enrichment
  44. 2026-08-11 14:49 UTCEG score recompute
  45. 2026-08-11 14:49 UTCGHSA enrichment
  46. 2026-08-11 03:58 UTCEG score recompute
  47. 2026-08-11 03:58 UTCGHSA enrichment
  48. 2026-08-11 00:00 UTCEPSS rescore
  49. 2026-08-10 17:09 UTCGHSA enrichment
  50. 2026-08-10 05:01 UTCGHSA enrichment
  51. 2026-08-09 18:11 UTCEG score recompute
  52. 2026-08-09 18:11 UTCGHSA enrichment
  53. 2026-08-09 13:46 UTCEPSS rescore
  54. 2026-08-09 07:22 UTCGHSA enrichment
  55. 2026-08-08 20:33 UTCEG score recompute
  56. 2026-08-08 20:33 UTCGHSA enrichment
  57. 2026-08-08 16:37 UTCEPSS rescore
  58. 2026-08-08 09:43 UTCGHSA enrichment
  59. 2026-08-07 22:54 UTCEG score recompute
  60. 2026-08-07 22:54 UTCGHSA enrichment
  61. 2026-08-07 12:04 UTCGHSA enrichment
  62. 2026-08-07 01:15 UTCGHSA enrichment
  63. 2026-08-06 14:25 UTCEG score recompute
  64. 2026-08-06 14:25 UTCGHSA enrichment
  65. 2026-08-06 13:47 UTCEPSS rescore
  66. 2026-08-06 03:35 UTCEG score recompute
  67. 2026-08-06 03:35 UTCGHSA enrichment
  68. 2026-08-05 19:17 UTCEPSS rescore
  69. 2026-08-05 16:45 UTCGHSA enrichment
  70. 2026-08-05 01:35 UTCEG score recompute
  71. 2026-08-05 01:35 UTCGHSA enrichment
  72. 2026-08-04 15:10 UTCEPSS rescore
  73. 2026-08-04 14:18 UTCGHSA enrichment
  74. 2026-08-04 13:59 UTCEG score recompute▲ 1.00
  75. 2026-08-04 13:59 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-51219?
CVE-2026-51219 is a high vulnerability published on June 29, 2026. A heap buffer overflow in the HighPriorityASDUQueue_hasUnconfirmedIMessages function of lib60870 v2.3.3 to v2.3.6 allows attackers to cause a Denial of Service (DoS) via a crafted payload.
When was CVE-2026-51219 disclosed?
CVE-2026-51219 was first published in the National Vulnerability Database on June 29, 2026, with the most recent update on August 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-51219 actively exploited?
CVE-2026-51219 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 60.3% of all scored CVEs.
What is the CVSS score of CVE-2026-51219?
CVE-2026-51219 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-51219?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-51219, 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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