If you haven’t updated your flash player yet, now might be a good time.
Adobe has released security updates for Adobe Flash Player for Windows, Macintosh, Linux and ChromeOS. These updates address critical vulnerabilities that could potentially allow an attacker to take control of the affected system.
Source: https://helpx.adobe.com/security/products/flash-player/apsb16-10.html
Adobe has already confirmed this vulnerability is being exploited in the wild.