CVE-2026-67860

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
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.

open62541 1.5.5 contains a heap-based buffer overflow in the default HistoryRead path when the default history database is used with the memory backend.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

August 4, 2026

Last Modified

August 31, 2026

Advisory Details (1)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

`Heap Buffer Overflow` in open62541 HistoryRead ContinuationPoint Skip Handling · Issue #8091 · open62541/open62541 · GitHub

https://github.com/open62541/open62541/issues/8091

Vendor Advisories for CVE-2026-67860(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
open625411.4.11.1-1, 1.4.18-1——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
open625411.4.11.1-1, 1.4.18-1——

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 23× in last 7d / 99× 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 175 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-67860?
CVE-2026-67860 is a high vulnerability published on August 4, 2026. open62541 1.5.5 contains a heap-based buffer overflow in the default HistoryRead path when the default history database is used with the memory backend.
When was CVE-2026-67860 disclosed?
CVE-2026-67860 was first published in the National Vulnerability Database on August 4, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-67860 actively exploited?
CVE-2026-67860 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 80.9% of all scored CVEs.
What is the CVSS score of CVE-2026-67860?
CVE-2026-67860 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-67860?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-67860, 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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