CVE-2026-91790
Received Received - Intake

Foxit PDF Editor Use-After-Free in Image Rendering

Publication date: 2026-09-23

Last updated on: 2026-09-23

Assigner: Foxit

Description
When rendering the page image, Foxit PDF Editor/Reader fails to perform validation on image objects whose optional content attributes are malformed. As a result, the program may access an already-freed internal data structure, triggering a crash due to UAF.

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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-2026-91790
EUVD
EUVD-2026-85132

Affected Vendors & Products

Showing 7 associated CPEs
Vendor Product Version / Range
foxit pdf_reader to 2024.2.3.25184 (inc)
foxit pdf_editor to 2024.2.3.25184 (inc)
foxit pdf_editor From 2024.0.0 (inc) to 2024.2.3.25184 (inc)
foxit pdf_editor to 2023.3.0.23028 (inc)
foxit pdf_editor to 13.1.3.22478 (inc)
foxit pdf_editor to 12.1.7.15526 (inc)
foxit pdf_editor to 11.2.10.53951 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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

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Executive Summary

This vulnerability is a Use-After-Free (UAF) issue in Foxit PDF Editor/Reader. When rendering page images, the software fails to validate image objects with malformed optional content attributes. This can cause the program to access freed internal data structures, leading to crashes or potential arbitrary code execution.

Detection Guidance

This vulnerability involves a Use-After-Free condition in Foxit PDF Editor/Reader when handling malformed image objects. Detection primarily relies on identifying outdated software versions rather than specific commands. Check installed Foxit PDF Reader or Editor versions against affected releases listed in Foxit's security bulletins.

Impact Analysis

An attacker could exploit this to execute remote code or disclose sensitive information on your system. Successful exploitation may allow unauthorized access, data theft, or system compromise, depending on the attacker's goals and your system's configuration.

Compliance Impact

This vulnerability could lead to unauthorized data access or disclosure, violating GDPR's data protection principles or HIPAA's confidentiality requirements. Organizations may face compliance violations, legal penalties, or reputational damage if exploited.

Mitigation Strategies

Update Foxit PDF Reader or Editor to the latest version immediately using the application's built-in update feature or download from Foxit's official website. Ensure all previous versions are removed to prevent potential exploitation.

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