CVE-2026-91800: Foxit PDF Editor installer local privilege escalation

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-23 · updated 2026-10-15
Weakness: CWE-732

Description

A local privilege escalation vulnerability exists in the installer of Foxit PDF Editor for macOS due to insufficient validation of a user-modifiable configuration value during high-privilege upgrades. A local attacker could exploit this issue to execute arbitrary commands with root privileges.

Affected products

Foxit PDF Reader: through 13.2.6.63484; from 14.0.0.68868 through 14.0.7.69441; from 2023.1.0.55583 through 2023.3.0.63083; from 2024.1.0.63682 through 2024.4.1.66479; from 2025.1.0.66692 through 2025.3.0.69570; from 2026.1.0.70169 through 2026.2.0.72029
Foxit Pdf Reader: through 2026.2.0.72029

References

https://www.foxit.com/support/security-bulletins.html

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