CVE-2026-5940 Foxit PDF Editor/Reader Annotation Use-After-Free Remote Code Execution Vulnerability

High 7.8 Published 27 Apr 2026 Updated 28 Apr 2026

Attackers can trigger a use-after-free via script to cause crashes or execute code in Foxit PDF Editor and Reader.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2026-5940?

CVE-2026-5940 is a high-severity use after free vulnerability in Foxit Pdf Editor, published on 27 Apr 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Calling a function that triggers a UI refresh after removing comments via a script may access an invalidated object, leading to program crashes.

Weakness: CWE-416

Which versions are affected by CVE-2026-5940?

It affects 2 products.

Products include Foxit Pdf Editor, Foxit Pdf Reader.

How do I fix CVE-2026-5940?

No fix has been published for CVE-2026-5940 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2026-5940 being exploited?

There is no known exploitation of CVE-2026-5940 in the wild and no public exploit code.

All Foxit Pdf Editor vulnerabilities

Sources

Also known as GHSA-gmwv-jpmc-ppqc.