ZDI-26-303: Foxit PDF Reader AcroForm Signature Use-After-Free Information Disclosure Vulnerability

Published Apr 27, 2026
·
Updated

This vulnerability allows remote attackers to disclose sensitive information 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 3.3. The following CVEs are assigned: CVE-2026-5942.

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
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Frequently Asked Questions

1

What is the severity of ZDI-26-303?

ZDI-26-303 has been assigned a CVSS rating of 3.3, indicating a low severity vulnerability.

2

How do I fix ZDI-26-303?

To fix ZDI-26-303, ensure that you update Foxit PDF Reader to the latest version provided by the vendor.

3

What type of vulnerability is ZDI-26-303?

ZDI-26-303 is a use-after-free information disclosure vulnerability affecting Foxit PDF Reader.

4

What are the implications of ZDI-26-303?

Exploitation of ZDI-26-303 could allow remote attackers to disclose sensitive information from affected installations.

5

What is required to exploit ZDI-26-303?

User interaction is required to exploit ZDI-26-303, as the target must visit a malicious page or open a malicious file.

Contact

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