CVE Vulnerabilities

CVE-2021-34970

Use of Externally-Controlled Format String

Published: May 07, 2024 | Modified: Aug 13, 2025
CVSS 3.x
5.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

Foxit PDF Reader print Method Use of Externally-Controlled Format String Information Disclosure Vulnerability. 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 specific flaw exists within the implementation of the print method. The issue results from the lack of proper validation of a user-supplied string before using it as a format specifier. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process. Was ZDI-CAN-14849.

Weakness

The product uses a function that accepts a format string as an argument, but the format string originates from an external source.

Affected Software

Name Vendor Start Version End Version
Pdf_editor Foxit * 10.1.5.37672 (including)
Pdf_editor Foxit 11.0.0.49893 (including) 11.0.0.49893 (including)
Pdf_editor Foxit 11.0.1.49938 (including) 11.0.1.49938 (including)
Pdf_reader Foxit * 11.0.1.49938 (including)

Potential Mitigations

References