Adobe Acrobat and Reader versions , 2019.021.20056 and earlier, 2017.011.30152 and earlier, 2017.011.30155 and earlier version, 2017.011.30152 and earlier, and 2015.006.30505 and earlier have an use after free vulnerability. Successful exploitation could lead to arbitrary code execution .
https://helpx.adobe.com/security/products/acrobat/apsb19-55.html
https://helpx.adobe.com/security/products/acrobat/apsb19-55.html