Use-After-Free Vulnerability in Foxit PDF Editor/Reader
CVE-2026-91805

7.8HIGH

Key Information:

Vendor

Foxit Inc.

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

What is CVE-2026-91805?

A use-after-free vulnerability in Foxit PDF Editor and Reader compromises the application’s handling of PDF page trees. This flaw can be exploited by specially crafted PDF files, triggering unexpected changes to the page structure during rendering processes. Such changes may lead to the application accessing previously released page objects, resulting in memory corruption and potential crashes, thereby exposing users to risks of data loss and system instability.

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

Xupeng
.