Untrusted Pointer Dereference in Foxit PDF Editor (formerly Foxit PhantomPDF) and Foxit PDF Reader for Windows - CVE-2026-91795
Published: September 23, 2026
Vulnerability identifier: #VU151828
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-91795
CWE-ID: CWE-822
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to untrusted pointer dereference in the FileOpen plugin when opening a PDF containing a malicious FOPN_foweb encryption filter. A remote attacker can trick the victim into opening a crafted PDF to execute arbitrary code.
Affected software
Foxit PDF Editor (formerly Foxit PhantomPDF)
Foxit PDF Reader for Windows
Foxit PDF Reader for Windows
How to mitigate CVE-2026-91795
Install security update from vendor's website.
Foxit PDF Editor (formerly Foxit PhantomPDF) - addressed in versions 13.2.7.24160, 14.0.8.33807, 2026.2.1.39815
Foxit PDF Reader for Windows - update to 2026.2.1.39815
Foxit PDF Reader for Windows - update to 2026.2.1.39815