This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit PhantomPDF 126.96.36.19997. 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 Array.prototype.concat. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-7131.