Mozilla released Firefox 67.0.3 and Firefox ESR 60.7.1 versions to patch a critical zero-day vulnerability in the browsing software that hackers have been found exploiting in the wild. The vulnerability, identified as, affects anyone who uses Firefox on desktop (Windows, macOS, and Linux) The vulnerability could allow attackers to remotely execute arbitrary code on machines running vulnerable Firefox versions and take full control of them. Firefox for Android, iOS, and Amazon Fire TV are not affected.
Source: https://thehackernews.com/2019/06/mozilla-firefox-patch-update.html