{"id":"CVE-2026-97313","published":"2026-10-21T13:21:09.270","lastModified":"2026-10-26T21:10:00.170","description":"A recursive BIND server that receives a query with recursion desired (RD=1) followed by a non-recursive query (RD=0) may exit with an assertion failure, resulting in a denial of service. To be vulnerable, the BIND server must allow recursive queries and have at least two RPZ zones configured: one with the default setting of \"recursive-only yes\", and the other with \"recursive-only no\".\nThis issue affects BIND 9 versions 9.16.0 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.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-617"],"vendors":[],"products":[],"references":[{"url":"https://downloads.isc.org/isc/bind9/9.20.30","tags":[]},{"url":"https://downloads.isc.org/isc/bind9/9.21.27","tags":[]},{"url":"https://kb.isc.org/docs/cve-2026-97313","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}