CVE-2026-91802
Received Received - Intake

Heap-based Out-of-Bounds Write in Foxit PDF Editor/Reader

Publication date: 2026-09-23

Last updated on: 2026-09-23

Assigner: Foxit

Description
A heap-based out-of-bounds write vulnerability exists in Foxit PDF Editor/Reader’s WebP image decoding due to improper handling of bitmap stride and target buffer formats. Successful exploitation could result in an application crash.

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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-2026-91802
EUVD
EUVD-2026-85120

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.

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Executive Summary

This is a heap-based out-of-bounds write vulnerability in Foxit PDF Editor/Reader caused by improper handling of bitmap stride and target buffer formats during WebP image decoding. It could lead to application crashes if exploited.

Impact Analysis

Exploitation could crash the application, potentially allowing attackers to execute arbitrary code or gain unauthorized access to sensitive data processed by the PDF software.

Mitigation Strategies

Update Foxit PDF Editor or Reader to the latest version to patch the vulnerability. Disable WebP image decoding if not required or restrict processing of untrusted PDF files.

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