CVE-2016-5297: Mozilla: Incorrect argument length checking in Javascript (MFSA 2016-89, MFSA 2016-90)

Severity: Critical

CVSS Score: 9.8

An error in argument length checking in JavaScript, leading to potential integer overflows or other bounds checking issues. This vulnerability affects Thunderbird < 45.5, Firefox ESR < 45.5, and Firefox < 50.