Firefox version 67 and Firefox Extended Support Release (ESR) version 60.7 released this week fixing multiple vulnerabilities.
The two biggest issues were a series of memory bugs, said officials at the Mozilla Foundation, the creator of Firefox.
The first set that has the case number of CVE-2019-9814, was found only in Firefox.
The second set, with the case number of CVE-2018-9800, was in Firefox and Firefox ESR.
In all, Firefox had three issues rated critical, 11 high, six moderate, and two were low.
On the other hand, Firefox ESR had one critical vulnerability, 12 high, and three moderate.