Foxit Reader 8.3.1.21155 XFAScriptObject Object remove privilege escalation

A vulnerability was found in Foxit Reader 8.3.1.21155 (Document Reader Software). It has been classified as critical. Affected is the function remove of the component XFAScriptObject Object Handler. Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.