CVE-2026-91795
Received Received - Intake

Foxit PDF Editor Read Access Violation via Encryption Metadata

Publication date: 2026-09-23

Last updated on: 2026-09-23

Assigner: Foxit

Description
Foxit PDF Editor/Reader's FileOpen plugin did not adequately validate certain encryption metadata in specially crafted PDF files. This could leave an internal pointer in an invalid state, resulting in chained read and write access violations and potentially enabling 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-2026-91795
EUVD
EUVD-2026-85127

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
foxit pdf_editor *

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-822 The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

Foxit PDF Editor or Reader's FileOpen plugin fails to properly validate encryption metadata in specially crafted PDF files. This flaw causes an internal pointer to become invalid, leading to sequential read and write access violations. The issue may allow attackers to execute arbitrary code on the affected system.

Detection Guidance

This vulnerability involves improper validation of encryption metadata in PDF files processed by Foxit PDF Editor/Reader. Detection primarily relies on monitoring for crashes or unusual behavior when opening PDFs, as the issue leads to read/write access violations. No specific commands are provided in the context to directly detect this flaw.

Impact Analysis

If exploited, this vulnerability could let attackers run malicious code on your computer, potentially stealing data, installing malware, or taking control of your system. Opening a malicious PDF file could trigger the exploit without additional user interaction beyond opening the file.

Compliance Impact

This vulnerability could lead to arbitrary code execution, which may result in unauthorized access to sensitive data. This could violate GDPR's data protection requirements and HIPAA's safeguards for protected health information if exploited.

Mitigation Strategies

Update Foxit PDF Editor/Reader to the latest version to ensure the FileOpen plugin is patched. Avoid opening untrusted PDF files, especially those from unknown sources. Disable the FileOpen plugin if not required.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-91795. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart