{"action":"Upgrade fetchmail to 6.3.9~rc2-6 or later.","affected":[{"fixed":"6.3.9~rc2-6","introduced":"0"}],"component":"fetchmail","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["6.3.9~rc2-6"],"id":"tcs_01M5N9B59DP9FTT67X3R92NXVB","modified_at":"2026-10-23T17:47:44.872621330Z","published_at":"2009-08-07T19:00:01.063Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2009-2666","https://security-tracker.debian.org/tracker/CVE-2009-2666"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2009-2666#Debian:14/fetchmail","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2009-2666"}],"summary":"socket.c in fetchmail before 6.3.11 does not properly handle a '\\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers"}