Adobe Acrobat Reader versions 11.0.19 and earlier, 15.006.30280 and earlier, 15.023.20070 and earlier have a memory address leak vulnerability in the image conversion engine, related to parsing of EMF - enhanced meta file format.
https://helpx.adobe.com/security/products/acrobat/apsb17-11.html
http://www.zerodayinitiative.com/advisories/ZDI-17-276/