Out-of-bounds write in Foxit PDF Editor (formerly Foxit PhantomPDF) and Foxit PDF Reader for Windows - CVE-2026-91804
Published: September 23, 2026
Vulnerability identifier: #VU151811
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-2026-91804
CWE-ID: CWE-787
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 an out-of-bounds write in the application when processing crafted content. A remote attacker can trick the victim into opening crafted content 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-2026-91804
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