CVE-2026-91791 HIGH

CVE-2026-91791: Foxit PDF Editor/Reader Annotation Use-After-Free Remote Code Execution Vulnerability

Vendor Foxit Software Inc.
Product Foxit PDF Editor
Weakness CWE-416
Published September 23, 2026
Last update September 23, 2026
View on NVD All CVEs

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

When processing a specially crafted PDF file, Foxit PDF Editor/Reader may encounter a reentrant execution condition involving JavaScript triggered by page-visibility events. This can cause the application to access a released page-view object while calculating annotation boundaries, resulting in an invalid memory read and application crash.

Key dates

02Disclosure timeline

September 23, 2026 CVE published