ZDI-CAN-28210: ZDI-25-1174: Foxit PDF Reader AcroForm User-After-Free Remote Code Execution Vulnerability

Published Dec 19, 2025

Updated

This vulnerability allows remote 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 7.8. The following CVEs are assigned: CVE-2025-66493.

Affected Software

1 affected component

Foxit Foxit PDF Reader

Event History

Dec 19, 2025

Advisory Published

via ZDI·06:00 AM

Data Sourced

via ZDI·06:00 AM

Description

Frequently Asked Questions

What is the severity of ZDI-CAN-28210?

ZDI-CAN-28210 is rated with a CVSS score that indicates a high severity due to its potential for remote code execution.

How do I fix ZDI-CAN-28210?

To mitigate ZDI-CAN-28210, update Foxit PDF Reader to the latest version that addresses the vulnerability.

What are the potential impacts of ZDI-CAN-28210?

Successful exploitation of ZDI-CAN-28210 could allow remote attackers to execute arbitrary code on affected installations.

Is user interaction required for ZDI-CAN-28210?

Yes, user interaction is necessary as the victim must visit a malicious page or open a malicious file to exploit ZDI-CAN-28210.

Which software is affected by ZDI-CAN-28210?

ZDI-CAN-28210 affects certain installations of Foxit PDF Reader.