CVE-2026-91802: Foxit PDF Editor/Reader — Heap Buffer Overflow in WebP Image Decoding via Bitmap Stride Confusion
Published Sep 23, 2026
·Updated
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.
Affected Software
1 affected component
Foxit PDF Editor/Reader
Event History
Sep 23, 2026
CVE Published
via MITRE·07:50 AM
Data Sourced
via MITRE·07:50 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·08:17 AM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What user interaction is required for exploitation?
The CVSS vector indicates user interaction is required. An attacker would need a user to process attacker-controlled content in the affected application.
2
Does exploitation require prior access or authentication?
No privileges are required according to the CVSS vector. The attack vector is local, so exploitation is not described as remotely reachable over a network.
3
What is the potential impact beyond an application crash?
The CVSS metrics rate confidentiality, integrity, and availability impact as high. However, the provided description specifically confirms that successful exploitation could crash the application.