Kea crash upon interaction between specific client options and subnet selection_CVE-2025-40779

{
    "lastseen": "",
    "description": "If a DHCPv4 client sends a request with some specific options, and Kea fails to find an appropriate subnet for the client, the `kea-dhcp4` process will abort with an assertion failure.  This happens only if the client request is unicast directly to Kea; broadcast messages do not cause the problem.\nThis issue affects Kea versions 2.7.1 through 2.7.9, 3.0.0, and 3.1.0.",
    "published": "2025-08-27T20:23:29.489Z",
    "modified": "2025-08-27T20:23:29.489Z",
    "type": "cve",
    "title": "Kea crash upon interaction between specific client options and subnet selection",
    "source": "isc",
    "references": "https://kb.isc.org/docs/cve-2025-40779",
    "id": "CVE-2025-40779",
    "bulletinFamily": "",
    "cwe": [
        "CWE-476"
    ],
    "cvelist": null,
    "sourceData": "ISC Kea 2.7.1\nISC Kea 3.0.0\nISC Kea 3.1.0",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "version": "3.1"
    },
    "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": "Kea",
    "version": "2.7.1",
    "vendor": "ISC",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}