{"id":"CVE-2026-76163","published":"2026-09-16T14:05:34Z","modified":"2026-09-17T17:38:11Z","title":"named aborts on a TKEY query when the user configuration has no global options statement","vendor":"ISC","product":"BIND 9","tier":"tail","description":{"text":"If BIND is loaded with a \"`named.conf`\" file that contains no global \"`options`\" block, an attacker can send a query of QTYPE TKEY which may cause an assertion failure and subsequent unexpected program exit.\nThis issue affects BIND 9 versions 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, and 9.20.9-S1 through 9.20.27-S1.","provenance":"source","from":"CVE.org"},"cvss":{"score":7.5,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00569,"percentile":0.46983,"provenance":"source"},"cwes":[{"id":"CWE-617","name":"Reachable Assertion"}],"references":[{"url":"https://kb.isc.org/docs/cve-2026-76163","tags":["vendor-advisory"]},{"url":"https://downloads.isc.org/isc/bind9/9.20.29","tags":["patch"]},{"url":"https://downloads.isc.org/isc/bind9/9.21.26","tags":["patch"]}],"priority":{"score":14.6,"factors":[{"name":"EPSS percentile","points":9.4},{"name":"CVSS severity","points":5.25}]},"vendorSlug":"isc","affectedVersions":[{"vendor":"ISC","product":"BIND 9","versions":[">= 9.20.0, <= 9.20.27",">= 9.21.0, <= 9.21.25",">= 9.20.9-S1, <= 9.20.27-S1"]}],"euvd":{"id":"EUVD-2026-80776","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-isc-bind-cwe-617"}}