CVE-2025-66499 - CVE House

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Status published High CVE-2025-66499

Foxit PDF Reader PDF Parsing Heap-Based Buffer Overflow Remote Code Execution Vulnerability

7.8 CVSS

Vulnerability Description

A heap-based buffer overflow vulnerability exists in the PDF parsing of Foxit PDF Reader when processing specially crafted JBIG2 data. An integer overflow in the calculation of the image buffer size may occur, potentially allowing a remote attacker to execute arbitrary code.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Anonymous working with Trend Micro Zero Day Initiative

References

https://www.foxit.com/support/security-bulletins.html

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Foxit pdfonline.foxit.com Stored Cross-Site Scripting in Digital IDs Common Name Field

Foxit pdfonline.foxit.com Stored Cross-Site Scripting in Trusted Certificates Feature

Foxit pdfonline.foxit.com Stored Cross-Site Scripting in Portfolio SVG Handling

Foxit pdfonline.foxit.com Stored Cross-Site Scripting in Layer Import Functionality

Affected Vendor

Foxit Software Inc.

View all reports →

Affected Software

Foxit PDF Reader, Foxit PDF Editor

Vulnerable Versions:

Versions 2025.2.1 and earlier, Versions 14.0.1 and earlier, Versions 13.2.1 and eariler

Timeline

Official Publish: December 19th, 2025

Last Modified: December 19th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application

T1068 Exploitation for Privilege Escalation

Privilege Escalation

T1055 Process Injection

Defense Evasion

T1105 Ingress Tool Transfer

Command and Control

T1499 Endpoint Denial of Service