ZDI-CAN-29495: ZDI-26-304: Foxit PDF Reader AcroForm Annotation Use-After-Free Remote Code Execution Vulnerability

Published Apr 27, 2026

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-2026-5943.

Affected Software

1 affected component

Foxit Foxit PDF Reader

Event History

Apr 27, 2026

Advisory Published

via ZDI·05:00 AM

Data Sourced

via ZDI·05:00 AM

Description

Frequently Asked Questions

What is the severity of ZDI-CAN-29495?

The severity of ZDI-CAN-29495 is critical due to its potential for remote code execution.

How do I fix ZDI-CAN-29495?

To fix ZDI-CAN-29495, update to the latest version of Foxit PDF Reader as per the vendor's guidance.

What type of attacks can exploit ZDI-CAN-29495?

ZDI-CAN-29495 can be exploited by remote attackers to execute arbitrary code on systems running vulnerable versions of Foxit PDF Reader.

Is user interaction required to exploit ZDI-CAN-29495?

Yes, user interaction is required as the target must open a specially crafted PDF file to trigger the vulnerability.

Which software is affected by ZDI-CAN-29495?

ZDI-CAN-29495 specifically affects Foxit PDF Reader installations.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

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