{"id":"CVE-2026-19630","revision":"575e8606908c4a61abd57fd7d704c14e","records":[{"revision":"575e8606908c4a61abd57fd7d704c14e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-19630","aliases":[],"title":"Amplified resource exhaustion in inbound message processing","description":"In a BIND resolver, inbound DNS protocol messages with a particular structure will result in additional processing, with no limit imposed by BIND.  A DNS message with a maliciously large number of such structures will cause BIND to consume disproportionate amounts of CPU time and memory during processing.\nThis issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through 9.21.26, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.29-S1.","state":0,"publishedAt":"2026-10-21T12:41:04.379+00:00","modifiedAt":"2026-10-21T17:19:14.434+00:00","affected":[{"ecosystem":"Vendor product","name":"BIND 9","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"ISC\",\n                    \"product\": \"BIND 9\",\n                    \"versions\": [\n                        {\n                            \"version\": \"9.11.0\",\n                            \"lessThanOrEqual\": \"9.18.50\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        },\n                        {\n                            \"version\": \"9.20.0\",\n                            \"lessThanOrEqual\": \"9.20.29\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        },\n                        {\n                            \"version\": \"9.21.0\",\n                            \"lessThanOrEqual\": \"9.21.26\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        },\n                        {\n                            \"version\": \"9.11.3-S1\",\n                            \"lessThanOrEqual\": \"9.18.50-S1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        },\n                        {\n                            \"version\": \"9.20.9-S1\",\n                            \"lessThanOrEqual\": \"9.20.29-S1\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://kb.isc.org/docs/cve-2026-19630","https://downloads.isc.org/isc/bind9/9.20.30","https://downloads.isc.org/isc/bind9/9.21.27"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-19630","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-19630","identifiers":["CVE-2026-19630"]},"retained":false,"historicalAffected":[]}],"coverage":[]}