{"action":"Upgrade bind9 to 1:9.20.26-1 or later.","affected":[{"fixed":"1:9.20.26-1","introduced":"0"}],"component":"bind9","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:9.20.26-1"],"id":"tcs_01M5NQFBXPER5BFB780D3YVVGR","modified_at":"2026-10-25T09:47:37.668240776Z","published_at":"2026-07-22T15:16:52.200Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-13321","https://security-tracker.debian.org/tracker/CVE-2026-13321"],"severity":{"label":"high","score":8.6},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-13321#Debian:14/bind9","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-13321"}],"summary":"The BIND resolver accepts validly-signed NSEC records where the \"Next Domain Name\" field points outside the signer's zone. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.2"}