{"id":"CVE-2020-12421","details":"When performing add-on updates, certificate chains terminating in non-built-in-roots were rejected (even if they were legitimately added by an administrator.) This could have caused add-ons to become out-of-date silently without notification to the user. This vulnerability affects Firefox ESR \u003c 68.10, Firefox \u003c 78, and Thunderbird \u003c 68.10.0.","modified":"2026-04-16T00:06:59.380045567Z","published":"2020-07-09T15:15:12.053Z","related":["SUSE-SU-2020:14421-1","SUSE-SU-2020:1898-1","SUSE-SU-2020:1899-1","SUSE-SU-2020:1900-1","openSUSE-SU-2020:0967-1","openSUSE-SU-2020:0982-1","openSUSE-SU-2020:0983-1","openSUSE-SU-2020:1017-1","openSUSE-SU-2024:10600-1","openSUSE-SU-2024:10601-1","openSUSE-SU-2024:14572-1"],"references":[{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202007-09"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202007-10"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2020-24/"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2020-25/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4421-1/"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2020-26/"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1308251"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-12421.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"78.0"}]},{"events":[{"introduced":"0"},{"fixed":"68.10.0"}]},{"events":[{"introduced":"0"},{"fixed":"68.10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.04"}]},{"events":[{"introduced":"0"},{"last_affected":"19.10"}]},{"events":[{"introduced":"0"},{"last_affected":"20.04"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"}]}