{"action":"Upgrade bind9 to 1:9.20.9-1 or later.","affected":[{"fixed":"1:9.20.9-1","introduced":"0"}],"component":"bind9","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:9.20.9-1"],"id":"tcs_01M5NNVJG5K0KSZRCWHT7NXP3G","modified_at":"2026-09-01T20:04:23.838097641Z","published_at":"2025-05-21T13:16:02.623Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-40775","https://security-tracker.debian.org/tracker/CVE-2025-40775"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-40775#Debian:14/bind9","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-40775"}],"summary":"When an incoming DNS protocol message includes a Transaction Signature (TSIG), BIND always checks it. If the TSIG contains an invalid value in the algorithm field, BIND immediately aborts with an asse"}