{"action":"Upgrade unbound to 1.9.4-1 or later.","affected":[{"fixed":"1.9.4-1","introduced":"0"}],"component":"unbound","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1.9.4-1"],"id":"tcs_01M5NDZRKCCKBH033KT07P3FB2","modified_at":"2026-10-09T09:47:26.073267028Z","published_at":"2019-10-03T19:15:09.550Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2019-16866","https://security-tracker.debian.org/tracker/CVE-2019-16866"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2019-16866#Debian:14/unbound","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2019-16866"}],"summary":"Unbound before 1.9.4 accesses uninitialized memory, which allows remote attackers to trigger a crash via a crafted NOTIFY query. The source IP address of the query must match an access-control rule."}