An exploitable use-after-free vulnerability exists in the JavaScript engine of Foxit Reader before 9.3 and PhantomPDF before 9.3 a different vulnerability than CVE-2018-16291 CVE-2018-16292 CVE-2018-16293 CVE-2018-16294 CVE-2018-16295 and CVE-2018-16297. A specially crafted PDF document can trigger a previously freed object in memory to be reused resulting in arbitrary code execution. An attacker needs to trick the user to open the malicious file to trigger this vulnerability. If the browser plugin extension is enabled visiting a malicious site can also trigger the vulnerability.