Integer overflow in Foxit PDF Editor (formerly Foxit PhantomPDF) and Foxit PDF Reader for Windows - CVE-2025-66499
Published: December 19, 2025 / Updated: December 23, 2025
Vulnerability identifier: #VU120225
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-2025-66499
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow. A remote attacker can trick the victim into opening a specially crafted PDF file with JBIG2 data, trigger an integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Foxit PDF Editor (formerly Foxit PhantomPDF)
Foxit PDF Reader for Windows
Foxit PDF Reader for Windows
How to mitigate CVE-2025-66499
Install updates from vendor's website.
Foxit PDF Editor (formerly Foxit PhantomPDF) - addressed in versions 13.2.2.24014, 14.0.2.33402, 2025.3.0.35737
Foxit PDF Reader for Windows - update to 2025.3.0.35737
Foxit PDF Reader for Windows - update to 2025.3.0.35737