libais 0.15 – Out-of-bounds Vector Access in VdmStream::AddLine via Invalid Sequential Message ID_CVE-2026-56770

{
    "lastseen": "",
    "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.",
    "published": "2026-06-25T18:06:39.537Z",
    "modified": "2026-06-25T18:06:39.537Z",
    "type": "cve",
    "title": "libais 0.15 - Out-of-bounds Vector Access in VdmStream::AddLine via Invalid Sequential Message ID",
    "source": "VulnCheck",
    "references": "https://github.com/schwehr/libais/issues/263\nhttps://www.vulncheck.com/advisories/libais-out-of-bounds-vector-access-in-vdmstream-addline-via-invalid-sequential-message-id",
    "id": "CVE-2026-56770",
    "bulletinFamily": "",
    "cwe": [
        "CWE-129"
    ],
    "cvelist": null,
    "sourceData": "schwehr libais 0",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "libais",
    "version": "0",
    "vendor": "schwehr",
    "ai_description": "Out-of-bounds memory access in libais due to unchecked sentinel value in VdmStream::AddLine",
    "ai_severity": "High",
    "ai_vendor": "schwehr",
    "ai_product": "libais",
    "ai_version": "0.15",
    "ai_score": 8.7
}