{"action":"Upgrade nsd to 4.15.1-1 or later.","affected":[{"fixed":"4.15.1-1","introduced":"0"}],"component":"nsd","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["4.15.1-1"],"id":"tcs_01M5NQWMYAZE686VQWBZWPKDPV","modified_at":"2026-10-01T03:02:55.330891251Z","published_at":"2026-08-26T09:16:45.437Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-18664","https://security-tracker.debian.org/tracker/CVE-2026-18664"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-18664#Debian:14/nsd","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-18664"}],"summary":"When ranges are used for access control (i.e. of the form 1.2.3.4-1.2.3.25), because NSD wrongly compares the IP address with the range on little endian systems, IPs that were meant to be allowed may"}