Adobe Acrobat Reader versions 11.0.19 and earlier, 15.006.30280 and earlier, 15.023.20070 and earlier have an exploitable memory corruption vulnerability in the image conversion module, related to processing of 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-17-254/