According to the Adobe Security Bulletin dated November 11 2014:
Adobe has released security updates for Adobe Flash Player for Windows, Macintosh and Linux. These updates address vulnerabilities that could potentially allow an attacker to take control of the affected system. Adobe recommends users update their product installations to the latest versions
So update ASAP!
To determine what version of the Adobe Flash player you have on your Windows, Macintosh or Linux system, visit http://www.adobe.com/software/flash/about/
To download the latest version of Adobe Flash Player without any adware or bundled third party offers, visit
Windows users should note that the Flash Player in Microsoft Internet Explorer v9 and earlier versions of Internet Explorer and the Flash player in web browsers like Opera, Mozilla Firefox and Safari are separate installs.
You should install and update both versions of Adobe Flash.
For Internet Explorer v10 and Internet Explorer v11 (for users for Windows 7 Service Pack 1 and Windows 8), these browsers have Adobe Flash Player built-in and users should update their Internet Explorer browser versions.
Google Chrome browser users has Adobe Flash Player built-in and users should update the Google Chrome browser to the latest version. See https://support.google.com/chrome/answer/95414 on how to do so.