{"action":"Upgrade bind9 to 1:9.20.15-1~deb13u1 or later.","affected":[{"fixed":"1:9.20.15-1~deb13u1","introduced":"0"}],"component":"bind9","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:9.20.15-1~deb13u1"],"id":"tcs_01M5NNVKAH6464RAZBPDSBYRTC","modified_at":"2026-10-09T09:47:31.768672787Z","published_at":"2025-10-22T16:15:42.720Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-40780","https://security-tracker.debian.org/tracker/CVE-2025-40780"],"severity":{"label":"high","score":8.6},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-40780#Debian:13/bind9","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-40780"}],"summary":"In specific circumstances, due to a weakness in the Pseudo Random Number Generator (PRNG) that is used, it is possible for an attacker to predict the source port and query ID that BIND will use. This"}