ZDI-26-740: Foxit PDF Reader PRC Stream Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
Published Sep 23, 2026
·Updated
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 ZDI has assigned a CVSS rating of 7.8. The following CVEs are assigned: CVE-2026-91811.
Affected Software
1 affected component
Foxit PDF Reader
Event History
Sep 23, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
What must an attacker do to exploit this issue?
The attacker must induce the target to visit a malicious page or open a malicious file. Successful exploitation can result in arbitrary code execution on the affected Foxit PDF Reader installation.
2
Is user interaction required?
Yes. Exploitation requires the target to visit a malicious page or open a malicious file.
3
How severe is this vulnerability?
ZDI assigned this issue a CVSS rating of 7.8. The associated identifier is CVE-2026-91811.