{"id":"CVE-2026-81736","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-81736","summary":"If a BIND resolver has cached a tree of SVCB/HTTPS AliasMode records, and is then queried for the root of that tree, the resolver will spend disproportionate CPU time constructing the…","details":"If a BIND resolver has cached a tree of SVCB/HTTPS AliasMode records, and is then queried for the root of that tree, the resolver will spend disproportionate CPU time constructing the response.\nThis issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.18.11-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.","published":"2026-09-16T14:17:10.817","modified":"2026-09-17T19:17:03.880","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.00486,"percentile":0.40779,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://downloads.isc.org/isc/bind9/9.20.29"},{"type":"WEB","url":"https://downloads.isc.org/isc/bind9/9.21.26"},{"type":"WEB","url":"https://kb.isc.org/docs/cve-2026-81736"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-17T19:17:03.880"}}