Adobe Acrobat Reader versions 11.0.19 and earlier, 15.006.30280 and earlier, 15.023.20070 and earlier have an exploitable heap overflow vulnerability in the image conversion engine, related to internal tile manipulation in TIFF files. Successful exploitation could lead to arbitrary code execution.
https://helpx.adobe.com/security/products/acrobat/apsb17-11.html
http://www.zerodayinitiative.com/advisories/ZDI-17-273/