The vulnerabilities of Mozilla Firefox, Focus for Android, Mozilla Firefox ESR, and the email client Thunderbird involve allowing an unauthorized pointer to be freed, enabling a hacker to execute arbitrary code or cause a service failure.

The vulnerabilities of Mozilla Firefox, Focus for Android, Mozilla Firefox ESR, and the email client Thunderbird are related to the exploitation of an invalid pointer. Exploiting these vulnerabilities allows a remote attacker to execute arbitrary code or cause service interruptions...