Adobe recently published a security advisory APSA16-03, which details a vulnerability in Adobe Flash Player version 21.0.0.242 and earlier versions for Windows, Macintosh, Linux, and Chrome OS. This comes after a patch for a zero day exploit was released in early April.

Adobe believes the attackers are a group called “ScarCruft”. ScarCruft

Source: Hot Hardware – Yet Another Zero-Day Adobe Flash Exploit Is Running Loose Putting Users In Danger