CVE-2025-40779

{"id": "CVE-2025-40779", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-officer@isc.org", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2025-08-27T21:15:54.960", "references": [{"url": "https://kb.isc.org/docs/cve-2025-40779", "source": "security-officer@isc.org"}, {"url": "http://www.openwall.com/lists/oss-security/2025/08/27/1", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security-officer@isc.org", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Si un cliente DHCPv4 env\u00eda una solicitud con opciones espec\u00edficas y Kea no encuentra una subred adecuada para el cliente, el proceso `kea-dhcp4` se cancelar\u00e1 con un error de aserci\u00f3n. Esto solo ocurre si la solicitud del cliente se env\u00eda por unidifusi\u00f3n directamente a Kea; los mensajes de difusi\u00f3n no causan el problema. Este problema afecta a las versiones de Kea 2.7.1 a 2.7.9, 3.0.0 y 3.1.0."}], "lastModified": "2025-11-04T22:16:11.803", "sourceIdentifier": "security-officer@isc.org"}