CVE-2026-56770

HIGHPre-NVD 7.57.5—
EchelonGraph scoreHIGH confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-06-25. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

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

libais through 0.15 VdmStream::AddLine uses an unchecked sentinel value as a vector index when processing AIS sentences with empty or out-of-range sequential message IDs. Remote attackers can crash services or vessel systems by sending crafted AIVDM sentences over VHF marine radio or IP feeds, causing out-of-bounds memory access and potential corruption.

CVSS v3
7.5
EG Score
7.5(high)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
26.4%
KEV
Not listed

Published

June 25, 2026

Last Modified

June 25, 2026

Advisory Details (2)

Auto-updated Jun 25, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

libais 0.15 - Out-of-bounds Vector Access in VdmStream::AddLine via Invalid Sequential Message ID | Advisories | VulnCheck

https://www.vulncheck.com/advisories/libais-out-of-bounds-vector-access-in-vdmstream-addline-via-invalid-sequential-message-id
generic🟡 PoC Available

Out-of-Bounds `std::vector` Index in libais `VdmStream::AddLine` via Attacker-Controlled AIS Sequence ID · Issue #263 · schwehr/libais · GitHub

https://github.com/schwehr/libais/issues/263

Vendor Advisories for CVE-2026-56770(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 / 88× 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. 2026-07-24 14:18 UTCEPSS rescore
  2. 2026-07-24 14:18 UTCEPSS rescore
  3. 2026-07-23 14:18 UTCEPSS rescore
  4. 2026-07-23 03:20 UTCEG score recompute
  5. 2026-07-22 14:08 UTCEPSS rescore
  6. 2026-07-21 15:25 UTCEPSS rescore
  7. 2026-07-20 17:08 UTCEPSS rescore
  8. 2026-07-19 14:31 UTCEPSS rescore
  9. 2026-07-19 14:31 UTCEPSS rescore
  10. 2026-07-19 02:29 UTCEPSS rescore
  11. 2026-07-18 10:04 UTCEPSS rescore
  12. 2026-07-17 01:14 UTCGHSA enrichment
  13. 2026-07-16 17:03 UTCEPSS rescore
  14. 2026-07-16 13:30 UTCGHSA enrichment
  15. 2026-07-16 01:41 UTCGHSA enrichment
  16. 2026-07-15 16:57 UTCEPSS rescore
  17. 2026-07-15 16:57 UTCEPSS rescore
  18. 2026-07-15 13:58 UTCGHSA enrichment
  19. 2026-07-15 02:12 UTCGHSA enrichment
  20. 2026-07-15 02:00 UTCEPSS rescore
  21. 2026-07-15 02:00 UTCEPSS rescore
  22. 2026-07-14 14:28 UTCGHSA enrichment
  23. 2026-07-14 02:44 UTCGHSA enrichment
  24. 2026-07-13 22:31 UTCEPSS rescore
  25. 2026-07-13 15:00 UTCGHSA enrichment
Show 63 more
  1. 2026-07-13 06:13 UTCEPSS rescore
  2. 2026-07-13 06:13 UTCEPSS rescore
  3. 2026-07-13 03:16 UTCGHSA enrichment
  4. 2026-07-12 15:32 UTCGHSA enrichment
  5. 2026-07-12 05:46 UTCEPSS rescore
  6. 2026-07-12 03:44 UTCGHSA enrichment
  7. 2026-07-11 16:00 UTCGHSA enrichment
  8. 2026-07-11 08:27 UTCEPSS rescore
  9. 2026-07-11 08:27 UTCEPSS rescore
  10. 2026-07-11 04:16 UTCGHSA enrichment
  11. 2026-07-10 16:29 UTCGHSA enrichment
  12. 2026-07-10 04:43 UTCGHSA enrichment
  13. 2026-07-09 19:10 UTCEPSS rescore
  14. 2026-07-09 19:10 UTCEPSS rescore
  15. 2026-07-09 16:53 UTCGHSA enrichment
  16. 2026-07-09 05:09 UTCGHSA enrichment
  17. 2026-07-08 17:25 UTCGHSA enrichment
  18. 2026-07-08 15:16 UTCEPSS rescore
  19. 2026-07-08 15:16 UTCEPSS rescore
  20. 2026-07-08 05:41 UTCGHSA enrichment
  21. 2026-07-07 17:51 UTCGHSA enrichment
  22. 2026-07-07 13:46 UTCEPSS rescore
  23. 2026-07-07 13:46 UTCEPSS rescore
  24. 2026-07-07 05:56 UTCGHSA enrichment
  25. 2026-07-06 18:12 UTCGHSA enrichment
  26. 2026-07-06 16:27 UTCEPSS rescore
  27. 2026-07-06 16:27 UTCEPSS rescore
  28. 2026-07-06 06:11 UTCGHSA enrichment
  29. 2026-07-06 02:23 UTCEPSS rescore
  30. 2026-07-06 02:23 UTCEPSS rescore
  31. 2026-07-05 18:16 UTCGHSA enrichment
  32. 2026-07-05 06:31 UTCGHSA enrichment
  33. 2026-07-05 02:31 UTCEPSS rescore
  34. 2026-07-05 02:30 UTCEPSS rescore
  35. 2026-07-04 18:48 UTCGHSA enrichment
  36. 2026-07-04 06:59 UTCGHSA enrichment
  37. 2026-07-04 06:31 UTCEPSS rescore
  38. 2026-07-04 06:31 UTCEPSS rescore
  39. 2026-07-03 18:56 UTCGHSA enrichment
  40. 2026-07-03 07:11 UTCGHSA enrichment
  41. 2026-07-02 19:27 UTCGHSA enrichment
  42. 2026-07-02 07:43 UTCGHSA enrichment
  43. 2026-07-01 20:00 UTCGHSA enrichment
  44. 2026-07-01 15:07 UTCEPSS rescore
  45. 2026-07-01 08:16 UTCGHSA enrichment
  46. 2026-06-30 23:22 UTCEPSS rescore
  47. 2026-06-30 20:32 UTCGHSA enrichment
  48. 2026-06-30 08:48 UTCGHSA enrichment
  49. 2026-06-29 21:05 UTCGHSA enrichment
  50. 2026-06-29 14:06 UTCEPSS rescore
  51. 2026-06-29 09:22 UTCGHSA enrichment
  52. 2026-06-28 21:39 UTCGHSA enrichment
  53. 2026-06-28 14:07 UTCEPSS rescore
  54. 2026-06-28 09:55 UTCGHSA enrichment
  55. 2026-06-28 04:56 UTCEPSS rescore
  56. 2026-06-28 04:56 UTCEPSS rescore
  57. 2026-06-27 22:12 UTCGHSA enrichment
  58. 2026-06-27 10:27 UTCGHSA enrichment
  59. 2026-06-27 03:08 UTCEPSS rescore
  60. 2026-06-26 22:43 UTCGHSA enrichment
  61. 2026-06-26 10:57 UTCGHSA enrichment
  62. 2026-06-25 19:49 UTCEG score recompute
  63. 2026-06-25 19:49 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56770?
CVE-2026-56770 is a high vulnerability published on June 25, 2026. libais through 0.15 VdmStream::AddLine uses an unchecked sentinel value as a vector index when processing AIS sentences with empty or out-of-range sequential message IDs. Remote attackers can crash services or vessel systems by sending crafted AIVDM sentences over VHF marine radio or IP feeds,…
When was CVE-2026-56770 disclosed?
CVE-2026-56770 was first published in the National Vulnerability Database on June 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56770 actively exploited?
CVE-2026-56770 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 26.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-56770?
CVE-2026-56770 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-56770?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56770, 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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