Use-After-Free Vulnerability in Foxit PDF Editor/Reader JavaScript Annotations
CVE-2026-91818

7.8HIGH

Key Information:

Vendor

Foxit Inc.

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

What is CVE-2026-91818?

A use-after-free vulnerability in Foxit PDF Editor/Reader relates to its handling of JavaScript and PDF annotations. This flaw arises from reentrant page-event processing during annotation enumeration. When the associated page object is released prematurely, subsequent access to this object can lead to application crashes, posing potential 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:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
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
.