CVE-2026-91792 Foxit PDF Editor/Reader Annotation Use-After-Free Remote Code Execution Vulnerability
Attackers can execute arbitrary code or cause a crash by tricking users into opening a specially crafted PDF file in Foxit PDF Editor or 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-2026-91792?
CVE-2026-91792 is a high-severity use after free vulnerability in Foxit Pdf Editor, published on 23 Sep 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
When processing a specially crafted PDF, Foxit PDF Editor/Reader may perform reentrant zoom and layout operations through page- and annotation-related JavaScript actions. This can cause the application to access page objects after they have been released, resulting in a use-after-free condition and an application crash.
Weakness: CWE-416
Which versions are affected by CVE-2026-91792?
It affects 2 products.
Products include Foxit Pdf Editor, Foxit Pdf Reader.
How do I fix CVE-2026-91792?
No fix has been published for CVE-2026-91792 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-2026-91792 being exploited?
There is no known exploitation of CVE-2026-91792 in the wild and no public exploit code.
Other vulnerabilities in Foxit Pdf Editor
Sources
Also known as GHSA-p2r2-w9fr-r7r8.