Adobe Acrobat and Reader versions 2020.009.20074 and earlier, 2020.001.30002, 2017.011.30171 and earlier, and 2015.006.30523 and earlier have an out-of-bounds read vulnerability. Successful exploitation could lead to information disclosure.
https://www.zerodayinitiative.com/advisories/ZDI-20-987/
https://helpx.adobe.com/security/products/acrobat/apsb20-48.html