{"id":"CVE-2026-85559","aliases":["DEBIAN-CVE-2026-85559","UBUNTU-CVE-2026-85559"],"status":"published","description":"[Out-of-bounds read in Recursor findScopeZero]","facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2026-10-21T19:47:21.585741242Z","modified":"2026-11-05T13:00:07Z","fixes":[{"ecosystem":"Debian:14","package":"pdns-recursor","fixed_in":["5.4.8-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.4-1","4.8.6-1","4.8.7-1","4.8.8-1","4.8.8-1+deb12u1","4.9.0-1","4.9.0-2","4.9.1-1","4.9.1-2","4.9.1-3","4.9.1-4","4.9.2-1","4.9.2-2","4.9.3-1","4.9.4-1","4.9.5-1","5.0.5-1","5.0.7-1","5.0.7-2","5.0.9-1","5.1.3-1","5.1.3-2","5.2.0-1","5.2.0-2","5.2.0-3","5.2.0-4","5.2.0-5","5.2.1-1","5.2.2-1","5.2.2-2","5.2.4-1","5.2.4-2","5.2.5-1","5.3.0-1","5.3.0-2","5.3.0-3","5.3.0-4","5.3.0-5","5.3.1-1","5.3.3-1","5.3.4-1","5.3.4-2","5.3.5-1","5.4.0-1","5.4.1-1","5.4.1-2","5.4.2-1","5.4.2-2","5.4.3-1","5.4.4-1","5.4.5-1","5.4.6-1","5.4.6-2","5.4.8-1","5.4.9-1"]},{"source":"osv","ecosystem":"Debian:13","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.11-0+deb13u1","5.2.12-0+deb13u1","5.2.13-0+deb13u1","5.2.4-2","5.2.4-2+deb13u1","5.2.5-1","5.2.6-0+deb13u1","5.2.7-0+deb13u1","5.2.8-0+deb13u1","5.2.9-0+deb13u1","5.3.0-1","5.3.0-2","5.3.0-3","5.3.0-4","5.3.0-5","5.3.1-1","5.3.3-1","5.3.4-1","5.3.4-2","5.3.5-1","5.4.0-1","5.4.1-1","5.4.1-2","5.4.2-1","5.4.2-2","5.4.3-1","5.4.4-1","5.4.5-1","5.4.6-1","5.4.6-2","5.4.8-1","5.4.9-1"]},{"source":"osv","ecosystem":"Debian:14","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.4.8-1"}]}],"versions":["5.2.4-2","5.2.5-1","5.3.0-1","5.3.0-2","5.3.0-3","5.3.0-4","5.3.0-5","5.3.1-1","5.3.3-1","5.3.4-1","5.3.4-2","5.3.5-1","5.4.0-1","5.4.1-1","5.4.1-2","5.4.2-1","5.4.2-2","5.4.3-1","5.4.4-1","5.4.5-1","5.4.6-1","5.4.6-2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.7.3-1","4.0.0~alpha1-1","4.0.0~alpha1-2","4.0.0~alpha2-2","4.0.0~alpha2-2ubuntu0.1","4.0.0~alpha2-2ubuntu0.1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.6-1","4.0.6-1build1","4.0.7-1","4.1.1-1","4.1.1-1build1","4.1.1-2","4.1.1-2ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.2.0-6","4.2.1-1","4.2.1-1build1","4.2.1-1build2","4.2.1-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.2-3","4.6.0-1ubuntu1","4.6.0-1ubuntu1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.9.0-2","4.9.1-4","4.9.2-1","4.9.2-1build1","4.9.2-2","4.9.3-1","4.9.3-1build2","4.9.3-1build3"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.3.5-1","5.4.3-1","5.4.5-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"pdns-recursor","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.4-2build2","5.3.1-1","5.3.3-1","5.3.4-1","5.3.4-1build1","5.3.4-2","5.3.5-1"]}],"references":[{"url":"https://security-tracker.debian.org/tracker/CVE-2026-85559","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-85559","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-85559","tags":["report"]},{"url":"https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2026-12.html#cve-2026-85559-out-of-bounds-read-in-recursor-findscopezero","tags":["report"]}],"sources":{"osv":[{"id":"DEBIAN-CVE-2026-85559","status":"published","published":"2026-10-21T19:47:21.585741242Z","modified":"2026-11-05T13:00:07.523603083Z","updated_at":"2026-11-05T13:30:00.949926Z"},{"id":"UBUNTU-CVE-2026-85559","description":"[Out-of-bounds read in Recursor findScopeZero]","status":"published","published":"2026-10-23T00:00:00Z","modified":"2026-10-23T10:35:53.515189702Z","updated_at":"2026-11-02T16:57:24.828975Z"}]}}