High
python-libais — security advisory
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.
- Products
- python-libais
- Affected 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, 0.17+git.20190917.master.e464cf8-3build3, 0.17+git.20190917.master.e464cf8-4, 0.17+git.20190917.master.e464cf8-4build1, 0.17+git.20190917.master.e464cf8-5build1, 0.17+git.20190917.master.e464cf8-6, 0.17+git.20190917.master.e464cf8-6build1, 0.17+git.20190917.master.e464cf8-6build2
- Fixed versions
- Not specified
- CVEs
- CVE-2026-56770
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:47 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-56770
python-libais
Fixed versions: Not specified
python-libais
Fixed versions: Not specified
python-libais
Fixed versions: Not specified
python-libais
Fixed versions: Not specified
python-libais
Fixed versions: Not specified
Complete source record
{
"id": "b273ecc6582cb3055607aeb19e874bbfe45589ac42d414589518708cbc447f99",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-56770",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-56770",
"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 crafted AIVDM sentences over VHF marine radio or IP feeds, causing out-of-bounds memory access and potential corruption.",
"evidence": "osv:UBUNTU-CVE-2026-56770",
"products": [
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{
"value": "0.17+git.20190917.master.e464cf8-2build2",
"evidence": "/affected/0/versions"
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{
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"evidence": "/affected/0/versions"
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{
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"evidence": "/affected/0/versions"
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{
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"evidence": "/affected/4/versions"
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{
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"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-56770",
"aliases": [
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],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"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"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
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"type": "ECOSYSTEM",
"events": [
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"introduced": "0"
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],
"package": {
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"purl": "pkg:deb/ubuntu/python-libais?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
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"0.17+git.20190917.master.e464cf8-2build3",
"0.17+git.20190917.master.e464cf8-3",
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"database_specific": {
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"package": {
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"purl": "pkg:deb/ubuntu/python-libais?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
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"ecosystem_specific": {
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],
"modified": "2026-10-17T12:59:11.083077318Z",
"provider": "osv",
"upstream": [
"CVE-2026-56770"
],
"references": [
"https://ubuntu.com/security/CVE-2026-56770",
"https://www.cve.org/CVERecord?id=CVE-2026-56770",
"https://github.com/schwehr/libais/issues/263"
]
},
"related_cves": [
{
"value": "CVE-2026-56770",
"evidence": "/upstream"
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],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 359393,
"published_at": "2026-06-25T19:16:00+00:00"
}