{"cve":{"cve_id":"CVE-2025-40779","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00495,"epss_percentile":0.38547,"epss_as_of":"2026-06-23","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_at":"2025-08-27T20:23:29.489000Z","last_modified_at":null,"cvss_v3_score":7.5,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-476"],"nvd_references":["https://kb.isc.org/docs/cve-2025-40779"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:26:53.888276Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"N","value_label":"None"},{"metric":"I","name":"Integrity","value":"N","value_label":"None"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"isc","vendor_name":"ISC","product_slug":"kea","product_name":"Kea","version_start":"2.7.1","version_start_inclusive":true,"version_end":"2.7.9","version_end_inclusive":true,"cpe23_uri":"cve5:isc:kea:2.7.1:2.7.9"},{"vendor_slug":"isc","vendor_name":"ISC","product_slug":"kea","product_name":"Kea","version_start":"3.0.0","version_start_inclusive":true,"version_end":"3.0.0","version_end_inclusive":true,"cpe23_uri":"cve5:isc:kea:3.0.0:3.0.0"},{"vendor_slug":"isc","vendor_name":"ISC","product_slug":"kea","product_name":"Kea","version_start":"3.1.0","version_start_inclusive":true,"version_end":"3.1.0","version_end_inclusive":true,"cpe23_uri":"cve5:isc:kea:3.1.0:3.1.0"},{"vendor_slug":"isc","vendor_name":"ISC","product_slug":"kea","product_name":"Kea","version_start":"2.6.0","version_start_inclusive":true,"version_end":"2.6.4","version_end_inclusive":true,"cpe23_uri":"cve5:isc:kea:2.6.0:2.6.4"}],"exploit_refs":[],"news":[],"references":[{"url":"https://kb.isc.org/docs/cve-2025-40779","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2025-08-27T20:23:29.489000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:46:04.492182Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:46:04.492182Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:46:04.492182Z","label":"CVSS score revised","source":"cvelistv5"}]}