ZDI-26-741: Foxit PDF Reader FoxitUpdater Improper Certificate Validation Local Privilege Escalation Vulnerability

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Foxit PDF Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The ZDI has assigned a CVSS rating of 7.1. The following CVEs are assigned: CVE-2026-91812.