Medium severity · published May 7, 2024
CVE-2021-34970
Foxit PDF Reader print Method Use of Externally-Controlled Format String Information Disclosure Vulnerability
5.5
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 26% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PR
PDF Reader · Foxit
11.0.1.49938 · source: vendor, NVD, CISA
PE
Pdf Editor · Foxit
through 10.1.5.37672; 11.0.0.49893; 11.0.1.49938 · source: NVD, CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-34970
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-34970
Vendor Advisory
https://www.foxit.com/support/security-bulletins.html
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-1201/
More from PDF Reader
9.8
CVE-2022-24955
Foxit PDF Reader before 11.2.1 and Foxit PDF Editor before 11.2.1 have an Uncontrolled Search Path Element for DLL files
9.8
CVE-2022-24954
Foxit PDF Reader before 11.2.1 and Foxit PDF Editor before 11.2.1 have a Stack-Based Buffer Overflow related to XFA, for the 'subform colSpan="-2"' and 'draw colSpan="1"'…
9.8
CVE-2021-38563
An issue was discovered in Foxit PDF Reader before 11.0.1 and PDF Editor before 11.0.1
8.8
CVE-2026-91800
Foxit PDF Editor installer local privilege escalation
8.8
CVE-2026-91798
Foxit PDF Editor/Reader Updater Privilege Escalation
