{"action":"Upgrade firefox-esr to 45.7.0esr-1 or later.","affected":[{"fixed":"45.7.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["45.7.0esr-1"],"id":"tcs_01M5NCEBYGJCSGV55EEX13MSE6","modified_at":"2026-09-01T20:03:48.121411363Z","published_at":"2018-06-11T21:29:03.780Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2017-5396","https://security-tracker.debian.org/tracker/CVE-2017-5396"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2017-5396#Debian:14/firefox-esr","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2017-5396"}],"summary":"A use-after-free vulnerability in the Media Decoder when working with media files when some events are fired after the media elements are freed from memory. This vulnerability affects Thunderbird < 45"}