{"action":"Upgrade firefox-esr to 52.3.0esr-1 or later.","affected":[{"fixed":"52.3.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["52.3.0esr-1"],"id":"tcs_01M5NCMTYQWRX6GN6EYXAY45GV","modified_at":"2026-09-01T20:03:50.476558276Z","published_at":"2018-06-11T21:29:07.873Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2017-7753","https://security-tracker.debian.org/tracker/CVE-2017-7753"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2017-7753","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2017-7753"}],"summary":"An out-of-bounds read occurs when applying style rules to pseudo-elements, such as ::first-line, using cached style data. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox"}