Adobe Flash Player has an exploitable memory corruption vulnerability in the text handling function. Successful exploitation could lead to arbitrary code execution. This affects 26.0.0.151 and earlier.
https://www.exploit-db.com/exploits/42782/
https://www.exploit-db.com/exploits/42781/
https://security.gentoo.org/glsa/201709-16
https://helpx.adobe.com/security/products/flash-player/apsb17-28.html
https://access.redhat.com/errata/RHSA-2017:2702