CVE-2026-91804 HIGH

CVE-2026-91804: Foxit PDF Editor/Reader Out-of-bounds Write Vulnerability While Rendering

Vendor Foxit Software Inc.
Product Foxit PDF Editor
Weakness CWE-787
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

A heap-based out-of-bounds write vulnerability exists in Foxit PDF Editor/Reader’s rendering of Circle annotations with malformed Cloudy appearance streams in specially crafted PDF files. Insufficient validation of the appearance geometry can result in memory corruption and application crashes.

Key dates

02Disclosure timeline

September 23, 2026 CVE published