Mozilla has released critical security updates for Firefox, Firefox ESR, and Thunderbird, addressing critical vulnerabilities. Most severe of discovered vulnerabilities could allow remote code execution on successful exploitation. 

A remote attacker can persuade a victim to visit a specially constructed website, corrupt the methods of an Array object in JavaScript via prototype pollution, and run arbitrary JavaScript code in a privileged context, potentially allowing an attacker to compromise the system.

                                                                                      Table 1: Vulnerability details

Table 2: Vulnerable versions