{"id":"DEBIAN-CVE-2026-80274","details":"If a BIND resolver sends a query for a DNSSEC-signed authoritative zone, and the authoritative server replies with a valid wildcard answer and signed NSEC3 proof, followed by an unsigned NSEC at the same owner name, it will trigger an unexpected program exit. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.27, 9.21.0 through 9.21.25, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.27-S1.","modified":"2026-09-19T05:00:31.456661490Z","published":"2026-09-16T15:17:52.690Z","upstream":["CVE-2026-80274"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-80274"}],"affected":[{"package":{"name":"bind9","ecosystem":"Debian:12","purl":"pkg:deb/debian/bind9?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:9.18.12-1","1:9.18.13-1","1:9.18.16-1","1:9.18.16-1~deb12u1","1:9.18.16-1~deb12u1~bpo11+1","1:9.18.19-1~deb12u1","1:9.18.19-1~deb12u1~bpo11+1","1:9.18.24-1","1:9.18.24-1~bpo11+1","1:9.18.28-1~deb12u1","1:9.18.28-1~deb12u2","1:9.18.33-1~deb12u2","1:9.18.41-1~deb12u1","1:9.18.44-1~deb12u1","1:9.18.47-1~deb12u1","1:9.18.49-1~deb12u1","1:9.18.49-1~deb12u2","1:9.19.10-1","1:9.19.11-1","1:9.19.14-1","1:9.19.17-1","1:9.19.19-1","1:9.19.21-1","1:9.19.24-185-g392e7199df2-1","1:9.19.24-2","1:9.19.6-1","1:9.19.6-2","1:9.20.0-1","1:9.20.0-2","1:9.20.1-1","1:9.20.10-1","1:9.20.11-1","1:9.20.11-2","1:9.20.11-3","1:9.20.11-4","1:9.20.11-4~bpo12+1","1:9.20.15-1","1:9.20.15-1~deb13u1","1:9.20.15-1~deb13u1~bpo12+1","1:9.20.15-2","1:9.20.18-1","1:9.20.18-1~deb13u1","1:9.20.18-1~deb13u1~bpo12+1","1:9.20.19-1","1:9.20.19-1~bpo12+1","1:9.20.2-1","1:9.20.20-1","1:9.20.20-1~bpo12+1","1:9.20.21-1","1:9.20.21-1~deb13u1","1:9.20.21-1~deb13u1~bpo12+1","1:9.20.22-1","1:9.20.23-1","1:9.20.23-1~deb13u1","1:9.20.23-1~deb13u1~bpo12+1","1:9.20.24-1","1:9.20.26-1","1:9.20.26-1~deb13u1","1:9.20.26-1~deb13u1~bpo12+1","1:9.20.27-1","1:9.20.27-2","1:9.20.29-1","1:9.20.29-1~deb13u1","1:9.20.3-1","1:9.20.4-2","1:9.20.4-3","1:9.20.4-4","1:9.20.5-1","1:9.20.7-1","1:9.20.8-1","1:9.20.8-2","1:9.20.8-3","1:9.20.8-4","1:9.20.8-5","1:9.20.8-6","1:9.20.9-1","1:9.20.9-2","1:9.21.0-1","1:9.21.1-1","1:9.21.10-1","1:9.21.10-10","1:9.21.10-2","1:9.21.10-4","1:9.21.10-5","1:9.21.10-6","1:9.21.10-7","1:9.21.10-8","1:9.21.10-9","1:9.21.14-1","1:9.21.18-1","1:9.21.21-1","1:9.21.22-1","1:9.21.23-1","1:9.21.25-1","1:9.21.26-1","1:9.21.3-1","1:9.21.6-1","1:9.21.7-1","1:9.21.9-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-80274.json"}},{"package":{"name":"bind9","ecosystem":"Debian:13","purl":"pkg:deb/debian/bind9?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.20.29-1~deb13u1"}]}],"versions":["1:9.20.11-4","1:9.20.15-1","1:9.20.15-1~deb13u1","1:9.20.15-1~deb13u1~bpo12+1","1:9.20.15-2","1:9.20.18-1","1:9.20.18-1~deb13u1","1:9.20.18-1~deb13u1~bpo12+1","1:9.20.19-1","1:9.20.19-1~bpo12+1","1:9.20.20-1","1:9.20.20-1~bpo12+1","1:9.20.21-1","1:9.20.21-1~deb13u1","1:9.20.21-1~deb13u1~bpo12+1","1:9.20.22-1","1:9.20.23-1","1:9.20.23-1~deb13u1","1:9.20.23-1~deb13u1~bpo12+1","1:9.20.24-1","1:9.20.26-1","1:9.20.26-1~deb13u1","1:9.20.26-1~deb13u1~bpo12+1","1:9.20.27-1","1:9.20.27-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-80274.json"}},{"package":{"name":"bind9","ecosystem":"Debian:14","purl":"pkg:deb/debian/bind9?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:9.20.29-1"}]}],"versions":["1:9.20.11-4","1:9.20.15-1","1:9.20.15-1~deb13u1","1:9.20.15-1~deb13u1~bpo12+1","1:9.20.15-2","1:9.20.18-1","1:9.20.18-1~deb13u1","1:9.20.18-1~deb13u1~bpo12+1","1:9.20.19-1","1:9.20.19-1~bpo12+1","1:9.20.20-1","1:9.20.20-1~bpo12+1","1:9.20.21-1","1:9.20.21-1~deb13u1","1:9.20.21-1~deb13u1~bpo12+1","1:9.20.22-1","1:9.20.23-1","1:9.20.23-1~deb13u1","1:9.20.23-1~deb13u1~bpo12+1","1:9.20.24-1","1:9.20.26-1","1:9.20.26-1~deb13u1","1:9.20.26-1~deb13u1~bpo12+1","1:9.20.27-1","1:9.20.27-2","1:9.20.29-1~deb13u1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-80274.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}