CVE-2026-3776: Foxit PDF Editor

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

The application does not validate the presence of required appearance (AP) data before accessing stamp annotation resources. When a PDF contains a stamp annotation missing its AP entry, the code continues to dereference the associated object without a prior null or validity check, which allows a crafted document to trigger a null pointer dereference and crash the application, resulting in denial of service.

Affected products

• Foxit PDF Editor: up to and including 13.2.2.24014; from 14.0.0.33046, up to and including 14.0.2.33402; from 2023.1.0.15510, up to and including 2023.3.0.23028; from 2024.1.0.23997, up to and including 2024.4.1.27687; from 2025.1.0.27937, up to and including 2025.3.0.35737; up to and including 13.2.2.63349; …
• Foxit PDF Reader: up to and including 2025.3.0.35737; up to and including 2025.3.0.69570

Published 2026-04-01. Last modified 2026-06-17.