Security Alert: Firefox exploit released

Users of the Firefox web browsers are advised to discontinue use and switch to Google Chrome, Apple Safari or another non-Firefox based browser.

Wordfence reports: A zero day vulnerability emerged in the Tor browser bundle and the Firefox web browser. It exploits Windows systems with a high success rate and affects Firefox versions 41 to 50 and the current version of the Tor Browser Bundle which contains Firefox 45  ESR.

Here is the link to the announcement:

Emergency Bulletin: Firefox 0 day in the wild. What to do.