Adobe released new versions of Flash to fix a bunch of bugs security. One of the exploits is already circulating on thenetwork.
This particular vulnerability (CVE-2015-8651) was reported by Kai Wang and Hunter Gao of the IT security department of Huawei.
Of course it is highly recommended that you immediately upgrade Flash which useste on Windows, OS X, Linux or Chrome OS, before the attacks begin.
Adobe normally has them updates security patch on the second Tuesday of every month, but due to the severity of the vulnerability and because as we mentioned above the exploit is already circulating online, it decided to release the patches earlier.
So critical update APSB16-01 fixes 19 security blanks:
https://helpx.adobe.com/security/products/flash-player/apsb16-01.html