Adobe Acrobat and Reader 2018.011.20040 and earlier, 2017.011.30080 and earlier, and 2015.006.30418 and earlier versions have an Out-of-bounds write vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.
https://research.checkpoint.com/2018/50-adobe-cves-in-50-days/
https://helpx.adobe.com/security/products/acrobat/apsb18-21.html