Unspecified vulnerability in the ExternalInterface ActionScript functionality in Adobe Flash Player before 10.3.183.67 and 11.x before 11.6.602.171 on Windows and Mac OS X and before 10.3.183.67 and 11.x before 11.2.202.273 on Linux allows remote attackers to execute arbitrary code via crafted SWF content as exploited in the wild in February 2013.