Adobe recently released a security advisory for Flash Player, Adobe Reader and Acrobat. The advisory stated a critical vulnerability existed in all versions of Flash prior to and including 10.0.45.2.
Late last week, Adobe released an updated version of Flash that does not contain the security vulnerability; version 10.1.53.64. After considering the importance of updating our users as fast as possible Mozilla has taken the following steps:
Updated our Plugin Checker to notify users with vulnerable versions of Flash to update to the latest version
Added Flash version detection to our What’s New pages when users update Firefox. Users with out-of-date versions of Flash will receive a prominent message to update.
Added messaging to our First Run pages prompting users to check that their plugins are up-to-date, linking them to the Plugin Checker.
Keeping your software up to date is one of the most important things you can do to stay safe online, and Mozilla will continue to look for ways to make that process as easy as possible for our users.