Heap-based Out-of-Bounds Read Vulnerability in Foxit PDF Editor/Reader
CVE-2026-91810

6.1MEDIUM

Key Information:

Vendor

Foxit Inc.

Status
Foxit PDF Editor
Foxit
Vendor
CVE Published:
23 September 2026

What is CVE-2026-91810?

A heap-based out-of-bounds read vulnerability has been identified in Foxit PDF Editor/Reader, specifically in its handling of malformed PDF image masks. This issue arises from inconsistent image metadata, which can lead to improper alpha-channel processing during the rendering of images. As a result, this may trigger an out-of-bounds read, potentially causing the application to crash when processing affected PDF files.

Affected Version(s)

Foxit PDF Editor Windows Versions 2026.2 and earlier

Foxit PDF Editor Windows Versions 14.0.7 and earlier

Foxit PDF Editor Windows Versions 13.2.6 and earlier

References

https://www.foxit.com/support/security-bulletins.html

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Anonymous working with TrendAI Zero Day Initiative
.