{"id":"CVE-2026-56770","summary":"libais 0.15 - Out-of-bounds Vector Access in VdmStream::AddLine via Invalid Sequential Message ID","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.","modified":"2026-06-26T04:11:20.621653991Z","published":"2026-06-25T18:06:39.537Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-129"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56770.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56770.json"},{"type":"PACKAGE","url":"https://github.com/schwehr/libais"},{"type":"EVIDENCE","url":"https://github.com/schwehr/libais/issues/263"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56770"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/libais-out-of-bounds-vector-access-in-vdmstream-addline-via-invalid-sequential-message-id"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/schwehr/libais","events":[{"introduced":"0"},{"last_affected":"c448afcdedec163322ba67db38a63107f23340fc"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0"},{"last_affected":"0.15"}]}}],"versions":["v0.15","v0.13","v0.12","v0.11","v0.10","v0.9","v0.8","v0.7"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-56770.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","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"}]}