CVE-2026-91810
Received Received - Intake

Heap Out-of-Bounds Read in Foxit PDF Editor

Publication date: 2026-09-23

Last updated on: 2026-09-23

Assigner: Foxit

Description
A heap-based out-of-bounds read vulnerability exists in Foxit PDF Editor/Reader’s handling of malformed PDF image masks. Inconsistent image metadata may cause incorrect alpha-channel processing during rendering, resulting in an out-of-bounds read and application crash.

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-2026-91810
EUVD
EUVD-2026-85164

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-125 The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a heap-based out-of-bounds read vulnerability in Foxit PDF Editor/Reader. It occurs when the software processes malformed PDF image masks with inconsistent metadata. During rendering, incorrect alpha-channel handling leads to reading memory outside allocated bounds, causing the application to crash.

Impact Analysis

An attacker could exploit this to crash the application, potentially leading to denial-of-service. If exploited, it might allow limited information disclosure or further system compromise depending on the environment.

Mitigation Strategies

Update Foxit PDF Editor or Reader to the latest version to patch the vulnerability. Avoid opening untrusted PDF files, especially those with malformed image masks. Monitor application crashes during PDF rendering as a potential indicator of exploitation.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-91810. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart