{"id":"CVE-2026-56770","aliases":["DEBIAN-CVE-2026-56770","EUVD-2026-39523","GHSA-2f4m-q55c-v3xr","UBUNTU-CVE-2026-56770"],"status":"published","title":"libais 0.15 - Out-of-bounds Vector Access in VdmStream::AddLine via Invalid Sequential Message ID","description":"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":{"version":"4.0","score":8.7,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00582,"percentile":0.48123,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-129"],"published":"2026-06-25T18:06:39Z","modified":"2026-11-09T02:47:24Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"python-libais","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.17+git.20190917.master.e464cf8-3","0.17+git.20190917.master.e464cf8-4","0.17+git.20190917.master.e464cf8-5","0.17+git.20190917.master.e464cf8-6"]},{"source":"osv","ecosystem":"Debian:13","package":"python-libais","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.17+git.20190917.master.e464cf8-5","0.17+git.20190917.master.e464cf8-6"]},{"source":"osv","ecosystem":"Debian:14","package":"python-libais","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.17+git.20190917.master.e464cf8-5","0.17+git.20190917.master.e464cf8-6"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"python-libais","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"python-libais","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.17+git.20190917.master.e464cf8-3build3","0.17+git.20190917.master.e464cf8-4","0.17+git.20190917.master.e464cf8-4build1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"python-libais","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.17+git.20190917.master.e464cf8-5build1","0.17+git.20190917.master.e464cf8-6"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"python-libais","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.17+git.20190917.master.e464cf8-6build2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"python-libais","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.17+git.20190917.master.e464cf8-6","0.17+git.20190917.master.e464cf8-6build1","0.17+git.20190917.master.e464cf8-6build2"]}],"products":[{"vendor":"schwehr","product":"libais"}],"references":[{"url":"https://github.com/schwehr/libais/issues/263","tags":["technical-description","exploit","issue-tracking","report"]},{"url":"https://www.vulncheck.com/advisories/libais-out-of-bounds-vector-access-in-vdmstream-addline-via-invalid-sequential-message-id","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56770","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-2f4m-q55c-v3xr"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56770.json","tags":["advisory"]},{"url":"https://github.com/schwehr/libais","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-56770","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-56770","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-56770","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-56770","title":"libais 0.15 - Out-of-bounds Vector Access in VdmStream::AddLine via Invalid Sequential Message ID","description":"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.","status":"published","published":"2026-06-25T18:06:39.537Z","modified":"2026-11-08T14:06:18.389Z","cvss":[{"version":"4.0","score":8.7,"vector":"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","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-129"],"updated_at":"2026-11-08T15:43:33.322657Z"}],"euvd":[{"id":"EUVD-2026-39523","description":"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.","status":"published","published":"2026-06-25T18:06:39Z","modified":"2026-11-08T14:06:18Z","cvss":[{"version":"4.0","score":8.7,"vector":"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","level":"high"}],"updated_at":"2026-11-08T15:13:07.762611Z"}],"ghsa":[{"id":"GHSA-2f4m-q55c-v3xr","title":"libais through 0.15 VdmStream::AddLine uses an unchecked sentinel value as a vector index when...","description":"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.","status":"published","published":"2026-06-25T21:31:29Z","modified":"2026-06-25T21:31:38Z","cvss":[{"version":"4.0","score":8.7,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-129"],"updated_at":"2026-11-02T15:08:59.328511Z"}],"nvd":[{"id":"CVE-2026-56770","description":"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.","status":"published","published":"2026-06-25T19:16:44.113Z","modified":"2026-10-25T22:10:00.15Z","cvss":[{"version":"4.0","score":8.7,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-129"],"updated_at":"2026-11-02T14:12:26.045561Z"}],"osv":[{"id":"CVE-2026-56770","title":"libais 0.15 - Out-of-bounds Vector Access in VdmStream::AddLine via Invalid Sequential Message ID","description":"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.","status":"published","published":"2026-06-25T18:06:39.537Z","modified":"2026-11-09T02:47:24.08933875Z","cvss":[{"version":"4.0","score":8.7,"vector":"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","level":"high"}],"cwes":["CWE-129"],"updated_at":"2026-11-09T03:16:17.543303Z"},{"id":"DEBIAN-CVE-2026-56770","description":"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.","status":"published","published":"2026-06-25T19:16:44.113Z","modified":"2026-10-26T11:47:34.753604425Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:57.590991Z"},{"id":"UBUNTU-CVE-2026-56770","description":"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.","status":"published","published":"2026-06-25T19:16:00Z","modified":"2026-10-17T12:59:11.083077318Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"4.0","score":8.7,"vector":"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","level":"high"}],"updated_at":"2026-11-02T16:56:41.382716Z"}]}}