{"id":"CVE-2026-56770","title":"libais 0.15 - Out-of-bounds Vector Access in VdmStream::AddLine via Invalid Sequential Message ID","summary":"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 c…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-129"],"vendor":"schwehr","product":"libais","affected":["libais <= 0.15"],"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-06-25T18:28:27.282996Z"},"exploitAvailable":true,"published":"2026-06-25","updated":"2026-11-08","sourceUpdated":"2026-11-08T14:06:18.389Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-56770","references":[{"url":"https://github.com/schwehr/libais/issues/263","label":"Researcher Disclosure"},{"url":"https://www.vulncheck.com/advisories/libais-out-of-bounds-vector-access-in-vdmstream-addline-via-invalid-sequential-message-id"}],"tags":["cve.org","exploit-available"],"epss":0.00582,"epssPercentile":0.48057,"ingestedAt":"2026-11-08T14:51:22.344Z","slug":"CVE-2026-56770","body":"## Overview\n\nlibais 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.\n\n## Affected\n\n- `libais <= 0.15`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}