CVE-2026-91799
Received Received - Intake

Use-After-Free in Foxit PDF Editor/Reader via JavaScript Array Handling

Publication date: 2026-09-23

Last updated on: 2026-09-23

Assigner: Foxit

Description
A use-after-free vulnerability exists in Foxit PDF Editor/Reader’s handling of JavaScript array objects. A specially crafted PDF may cause the application to access a released object during array processing, potentially resulting in application crashes or arbitrary code execution.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-23
Last Modified
2026-09-23
Generated
2026-09-23
AI Q&A
2026-09-23
EPSS Evaluated
N/A
NVD
CVE-2026-91799
EUVD
EUVD-2026-85124

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
foxit pdf_editor *
foxit pdf_reader *

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability is a use-after-free issue in Foxit PDF Editor/Reader when handling JavaScript array objects. A specially crafted PDF could cause the app to access a released object during array processing, potentially leading to crashes or arbitrary code execution.

Impact Analysis

If exploited, this flaw could allow attackers to crash the application or execute arbitrary code on your system by tricking you into opening a malicious PDF file. This could lead to unauthorized access or control of your device.

Compliance Impact

This vulnerability could potentially lead to unauthorized access or data breaches due to arbitrary code execution, which may violate compliance requirements under GDPR or HIPAA if sensitive data is exposed or mishandled.

Mitigation Strategies

Update Foxit PDF Editor or Reader to the latest version as soon as patches are available to address the use-after-free vulnerability in JavaScript array handling.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-91799. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart