Heap-based Out-of-Bounds Read in Foxit PDF Editor Reader
CVE-2026-91808

6.1MEDIUM

Key Information:

Vendor

Foxit Inc.

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

What is CVE-2026-91808?

A heap-based out-of-bounds read vulnerability has been identified in Foxit PDF Editor Reader due to its improper handling of PDF image objects that contain inconsistent compression metadata. The insufficient validation that occurs during the decoding of these images may lead to an undersized buffer, resulting in out-of-bounds read operations during rendering. This flaw can potentially cause the application to crash, disrupting the user experience and posing security risks.

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
.