CVE-2026-91802 HIGH

CVE-2026-91802: Foxit PDF Editor/Reader — Heap Buffer Overflow in WebP Image Decoding via Bitmap Stride Confusion

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 WebP image decoding due to improper handling of bitmap stride and target buffer formats. Successful exploitation could result in an application crash.

Key dates

02Disclosure timeline

September 23, 2026 CVE published