This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PhantomPDF 22.214.171.124478. 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 handling of the GetFieldValue command of the communication API. 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-9944.