{"action":"Upgrade bind9 to 1:9.18.49-1~deb12u2 or later.","affected":[{"fixed":"1:9.18.49-1~deb12u2","introduced":"0"}],"component":"bind9","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1:9.18.49-1~deb12u2"],"id":"tcs_01M5NQFBQDRN6QNRXBK5N709K1","modified_at":"2026-11-03T09:47:35.698636532Z","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","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"}