Adobe Acrobat and Reader versions 2019.010.20069 and earlier, 2019.010.20069 and earlier, 2017.011.30113 and earlier version, and 2015.006.30464 and earlier have an use after free vulnerability. Successful exploitation could lead to arbitrary code execution .
https://www.zerodayinitiative.com/advisories/ZDI-19-215/
https://helpx.adobe.com/security/products/acrobat/apsb19-07.html