CVE-2021-31442: Foxit Reader U3D File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

Published May 7, 2021
·
Updated

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.1.37576. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of U3D objects in PDF files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-13239.

Other sources

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handling of U3D objects in PDF files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of the current process.

Affected Software

5 affected components
Foxit Reader
Foxitsoftware Foxit Reader<=10.1.3.37598
Foxitsoftware Phantompdf<=9.7.5.29616
Foxitsoftware Phantompdf>=10.0.0.0<=10.1.3.37598
Microsoft Windows

Event History

May 7, 2021
CVE Published
via MITRE·08:16 PM
Data Sourced
via MITRE·08:16 PM
DescriptionSeverityWeakness
Feb 22, 2025
Advisory Published
via ZDI·04:31 AM
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the vulnerability ID?

The vulnerability ID is CVE-2021-31442.

2

What is the title of the vulnerability?

The title of the vulnerability is Foxit Reader U3D File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability.

3

What is the severity of CVE-2021-31442?

The severity of CVE-2021-31442 is high.

4

Which software is affected by CVE-2021-31442?

Foxit Reader 10.1.1.37576 and Foxit Phantompdf 9.7.5.29616 are affected by CVE-2021-31442.

5

How can I fix the CVE-2021-31442 vulnerability?

To fix the CVE-2021-31442 vulnerability, update Foxit Reader to version 10.1.3.37598 or later.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203