Vulnerability-Lookup

ubuntu-cve-2026-56770

Vulnerability from osv_ubuntu

Published

2026-06-25 19:16

Modified

2026-06-25 19:16

Summary

Details

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.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

8.7 (High)


                    
                      CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-56770	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-56770	REPORT
	https://github.com/schwehr/libais/issues/263	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libais-tools",
            "binary_version": "0.17+git.20190917.master.e464cf8-3build1"
          },
          {
            "binary_name": "python3-ais",
            "binary_version": "0.17+git.20190917.master.e464cf8-3build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "python-libais",
        "purl": "pkg:deb/ubuntu/python-libais@0.17+git.20190917.master.e464cf8-3build1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.17+git.20190917.master.e464cf8-2build2",
        "0.17+git.20190917.master.e464cf8-2build3",
        "0.17+git.20190917.master.e464cf8-3",
        "0.17+git.20190917.master.e464cf8-3build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libais-tools",
            "binary_version": "0.17+git.20190917.master.e464cf8-4build1"
          },
          {
            "binary_name": "python3-ais",
            "binary_version": "0.17+git.20190917.master.e464cf8-4build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "python-libais",
        "purl": "pkg:deb/ubuntu/python-libais@0.17+git.20190917.master.e464cf8-4build1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.17+git.20190917.master.e464cf8-3build3",
        "0.17+git.20190917.master.e464cf8-4",
        "0.17+git.20190917.master.e464cf8-4build1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libais-tools",
            "binary_version": "0.17+git.20190917.master.e464cf8-6"
          },
          {
            "binary_name": "python3-ais",
            "binary_version": "0.17+git.20190917.master.e464cf8-6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "python-libais",
        "purl": "pkg:deb/ubuntu/python-libais@0.17+git.20190917.master.e464cf8-6?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.17+git.20190917.master.e464cf8-5build1",
        "0.17+git.20190917.master.e464cf8-6"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libais-tools",
            "binary_version": "0.17+git.20190917.master.e464cf8-6build2"
          },
          {
            "binary_name": "python3-ais",
            "binary_version": "0.17+git.20190917.master.e464cf8-6build2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "python-libais",
        "purl": "pkg:deb/ubuntu/python-libais@0.17+git.20190917.master.e464cf8-6build2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.17+git.20190917.master.e464cf8-6",
        "0.17+git.20190917.master.e464cf8-6build1",
        "0.17+git.20190917.master.e464cf8-6build2"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2026-56770",
  "modified": "2026-06-25T19:16:00Z",
  "published": "2026-06-25T19:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-56770"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-56770"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/schwehr/libais/issues/263"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-56770"
  ]
}

CVE-2026-56770 (GCVE-0-2026-56770)

Vulnerability from cvelistv5 – Published: 2026-06-25 18:06 – Updated: 2026-06-25 18:28 X_Open Source

Title

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

Summary

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-25 18:28 UTC

CWE

CWE-129 - Improper Validation of Array Index

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
https://github.com/schwehr/libais/issues/263	technical-descriptionexploit
https://www.vulncheck.com/advisories/libais-out-o…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
schwehr	libais	Affected: 0 , ≤ 0.15 (custom)

Date Public

2026-06-24 00:00

Credits

FuzzingLabs

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-56770",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-25T18:28:27.282996Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-25T18:28:44.344Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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    ],
    "cna": {
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          "product": "libais",
          "repo": "https://github.com/schwehr/libais",
          "vendor": "schwehr",
          "versions": [
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        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
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            "providerUrgency": "NOT_DEFINED",
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            "valueDensity": "NOT_DEFINED",
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            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
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          "scenarios": [
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            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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          "scenarios": [
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      "references": [
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          "url": "https://github.com/schwehr/libais/issues/263"
        },
        {
          "tags": [
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          "url": "https://www.vulncheck.com/advisories/libais-out-of-bounds-vector-access-in-vdmstream-addline-via-invalid-sequential-message-id"
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      ],
      "tags": [
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  "cveMetadata": {
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.