Adobe  vulnerability (CVE-2015-8651) affects Flash Player in Windows, Mac OS X, Linux and ChromeOS and that an immediate patch needed to be issued.

Affected versions are:

• Adobe Flash Player Desktop Runtime versions 20.0.0.235 and earlier for Windows and Macintosh

• Adobe Flash Player Extended Support Release versions 18.0.0.268 and earlier for Windows and Macintosh

• Adobe Flash Player Extended Support Release versions 18.0.0.268 and earlier for Windows and Macintosh

• Adobe Flash Player Desktop Runtime versions 20.0.0.235 and earlier for Windows and Macintosh

• Adobe Flash Player Extended Support Release versions 18.0.0.268 and earlier for Windows and Macintosh

• Adobe Flash Player for Google Chrome versions 20.0.0.228 and earlier for Windows, Macintosh, Linux and ChromeOS

• Adobe Flash Player for Microsoft Edge and Internet Explorer 11 versions 20.0.0.228 and earlier for Windows 10.

• Adobe Flash Player for Internet Explorer 10 and 11 versions 20.0.0.228 and earlier for Windows 8.0 and 8.1

Source: Adobe