Adobe has released a security update for Adobe Flash Player for Windows, Macintosh, Linux and Chrome OS. This update addresses a regression that could lead to the unintended reset of the global settings preference file.
To verify the version of Adobe Flash Player installed on your system, access the About Flash Player page, or right- click on content running in Flash Player and select "About Adobe (or Macromedia) Flash Player" from the menu. If you use multiple browsers, perform the check for each browser you have installed on your system.
Adobe recommends users of the Adobe Flash Player Desktop Runtime for Windows, Macintosh and Linux update to Adobe Flash Player 28.0.0.126 via the update mechanism within the product  or by visiting the Adobe Flash Player Download Center.
Adobe Flash Player installed with Google Chrome will be automatically updated to the latest Google Chrome version, which will include Adobe Flash Player 28.0.0.126 for Windows, Macintosh, Linux and Chrome OS.
Adobe Flash Player installed with Microsoft Edge and Internet Explorer 11 for Windows 10 and 8.1 will be automatically updated to the latest version, which will include Adobe Flash Player 28.0.0.126.