CVE-2020-6822 (v3: 8.8) 24 Apr 2020
On 32-bit builds, an out of bounds write could have occurred when processing an image larger than 4 GB in
GMPDecodeData. It is possible that with enough effort this could have been exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.