Adobe has published an emergency security bulletin that addresses vulnerabilities the Flash Player and released a patch to fix a vulnerability which is currently being exploited in a sophisticated cyber espionage campaign. The vulnerability was discovered by two researchers at Kaspersky Lab, Alexander Polyakov and Anton Ivanov. The security hole affects the version 12.0.43 and earlier for both Windows and Mac OSs and Adobe Flash Player 11.2.202.335 and earlier versions for Linux. The vulnerability allows an attacker to remotely take control of the targeted system hosting Flash.
Source: https://thehackernews.com/2014/02/adobe-issues-emergency-flash-player.html