CVE-2026-91795: Foxit PDF Editor

High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days.

Foxit PDF Editor/Reader's FileOpen plugin did not adequately validate certain encryption metadata in specially crafted PDF files. This could leave an internal pointer in an invalid state, resulting in chained read and write access violations and potentially enabling arbitrary code execution.

Affected products

• Foxit PDF Editor: up to and including 13.2.5.63482; from 14.0.0.33046, up to and including 14.0.7.33751; 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; from 2026.1.0.36452, up to and including 2026.2.0.39747
• Foxit PDF Reader: up to and including 2026.2.0.39747

Published 2026-09-23. Last modified 2026-10-08.