An out of date graphics library (Angle) likely contained vulnerabilities that could potentially be exploited. This vulnerability affects Thunderbird < 78.9 and Firefox ESR < 78.9.Referenceshttps://www.mozilla.org/security/advisories/mfsa2021-12/https://www.mozilla.org/security/advisories/mfsa2021-11/https://bugzilla.mozilla.org/show_bug.cgi?id=1691547
