Adobe Flash Player versions 23.0.0.207 and earlier, 11.2.202.644 and earlier have an exploitable use after free vulnerability in the PSDK's MediaPlayer class. Successful exploitation could lead to arbitrary code execution.
https://security.gentoo.org/glsa/201701-17
https://helpx.adobe.com/security/products/flash-player/apsb16-39.html
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-154
http://www.zerodayinitiative.com/advisories/ZDI-16-620