{"action":"Upgrade putty to 0.63-1 or later.","affected":[{"fixed":"0.63-1","introduced":"0"}],"component":"putty","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["0.63-1"],"id":"tcs_01M5NAFSKJZC9R1T07RCR7TYE6","modified_at":"2026-09-01T20:03:17.633748785Z","published_at":"2013-08-19T23:55:08.767Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2013-4207","https://security-tracker.debian.org/tracker/CVE-2013-4207"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2013-4207#Debian:12/putty","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2013-4207"}],"summary":"Buffer overflow in sshbn.c in PuTTY before 0.63 allows remote SSH servers to cause a denial of service (crash) via an invalid DSA signature that is not properly handled during computation of a modular"}