CVE-2020-12406
Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9. Date published : 2020-07-09 https://bugzilla.mozilla.org/show_bug.cgi?id=1639590