{"action":"Upgrade proftpd-dfsg to 1.3.2a-2 or later.","affected":[{"fixed":"1.3.2a-2","introduced":"0"}],"component":"proftpd-dfsg","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1.3.2a-2"],"id":"tcs_01M5N9D34FA2DPFPM5Z0GZ61VP","modified_at":"2026-10-23T17:47:49.904286574Z","published_at":"2009-10-28T14:30:00.217Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2009-3639","https://security-tracker.debian.org/tracker/CVE-2009-3639"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2009-3639#Debian:14/proftpd-dfsg","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2009-3639"}],"summary":"The mod_tls module in ProFTPD before 1.3.2b, and 1.3.3 before 1.3.3rc2, when the dNSNameRequired TLS option is enabled, does not properly handle a '\\0' character in a domain name in the Subject Altern"}