CVE-2026-91798: Foxit Software Inc Foxit PDF Editor

High severity, CVSS 8.8. EPSS: 0.1% chance of exploitation in the next 30 days.

A local privilege escalation vulnerability exists in the update daemon of Foxit PDF Editor/Reader due to an insecure permission configuration that allows the configuration file to be modified by regular users, which may lead to arbitrary script execution with higher privileges.

Affected products

• Foxit Software Inc Foxit PDF Editor: up to and including 2026.2; up to and including 14.0.7; up to and including 13.2.6
• Foxit Software Inc Foxit PDF Reader: up to and including 2026.2

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