{"id":"CVE-2025-40779","details":"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2.7.1 through 2.7.9, 3.0.0, and 3.1.0.","modified":"2026-03-23T05:01:17.889258032Z","published":"2025-08-27T21:15:54Z","withdrawn":"2025-08-28T21:56:33.596881Z","related":["openSUSE-SU-2025:15499-1","openSUSE-SU-2026:20341-1"],"references":[{"type":"WEB","url":"https://kb.isc.org/docs/cve-2025-40779"},{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-40779"}],"affected":[{"package":{"name":"isc-kea","ecosystem":"Debian:12","purl":"pkg:deb/debian/isc-kea?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.0-6","2.2.0-7","2.2.0-8","2.2.1-1","2.2.1-2","2.2.1-3","2.4.0-1","2.4.1-1","2.4.1-2","2.4.1-3","2.6.1-1","2.6.1-2","2.6.3-1","2.6.3-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40779.json"}},{"package":{"name":"isc-kea","ecosystem":"Debian:13","purl":"pkg:deb/debian/isc-kea?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.6.3-1","2.6.3-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40779.json"}},{"package":{"name":"isc-kea","ecosystem":"Debian:14","purl":"pkg:deb/debian/isc-kea?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.6.3-1","2.6.3-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40779.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}