Attention! Are you using Firefox as your web browsing software on your Windows, Linux, or Mac systems?
If yes, you should immediately update your free and open-source Firefox web browser to the latest version available on Mozilla’s website.
Why the urgency? Mozilla earlier today released Firefox 72.0.1 and Firefox ESR 68.4.1 versions to patch a critical zero-day vulnerability in its browsing
Source:: The Hackers News