This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 9.5. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of TIF files. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-8695.
https://www.zerodayinitiative.com/advisories/ZDI-19-852/
https://www.foxitsoftware.com/support/security-bulletins.php