CVE-2021-34971

Name: CVE-2021-34971
Creator: NVD / NIST
Published: 2024-05-07T23:15:12.013+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.39%

Last modified Jun 17, 2026

CVE-2021-34971 is a vulnerability of currently unknown severity. Foxit PDF Reader JPG2000 File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit PDF Reader. EPSS estimates a 0.39% chance of exploitation in the next 30 days.

Description

Foxit PDF Reader JPG2000 File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. 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 specific flaw exists within the parsing of PDF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-14812.

Metrics

EPSS Probability

0.39%

30.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-122

Affected Software

Vendor	Product	Versions
Foxit	Pdf Editor	<= 10.1.5.37672
Foxit	Pdf Editor	11.0.0.49893
Foxit	Pdf Editor	11.0.1.49938
Foxit	Pdf Reader	<= 11.0.1.49938

References

https://www.foxit.com/support/security-bulletins.htmlVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1202/Third Party Advisory
https://www.foxit.com/support/security-bulletins.htmlVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1202/Third Party Advisory

Timeline

Published: May 7, 2024
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2021-34971?

How severe is CVE-2021-34971?

Severity scoring for CVE-2021-34971 is pending analysis. The EPSS model estimates a 0.39% probability of exploitation in the next 30 days.

How do I fix CVE-2021-34971?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-34971?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST