CVE-2026-91798 Foxit PDF Editor/Reader Updater Privilege Escalation

High 8.8 Published 23 Sep 2026 Updated 23 Sep 2026

Local attackers can escalate privileges by modifying a configuration file in the update daemon to execute arbitrary scripts with higher privileges.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-91798?

CVE-2026-91798 is a high-severity vulnerability in Foxit Pdf Editor, published on 23 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-732

Which versions are affected by CVE-2026-91798?

It affects 2 products.

Products include Foxit Pdf Editor, Foxit Pdf Reader.

How do I fix CVE-2026-91798?

No fix has been published for CVE-2026-91798 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-91798 being exploited?

There is no known exploitation of CVE-2026-91798 in the wild and no public exploit code.

All Foxit Pdf Editor vulnerabilities

Sources

Also known as GHSA-c38v-9c8x-3hf6.