CVE-2026-57256 Foxit Editor/Reader List Box Format Use-After-Free Vulnerability
A use-after-free vulnerability in Foxit PDF Editor and Reader allows attackers to cause a denial of service via crafted PDF JavaScript.
- 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-2026-57256?
CVE-2026-57256 is a high-severity use after free vulnerability in Foxit Pdf Editor, published on 8 Jul 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 the application opens a PDF and executes JavaScript, it performs abnormal operations on the list box field, and this operation is repeated after the form is reset. During this process, the application failed to adequately verify the validity of the form objects and their internal dictionary pointers, resulting in accessing internal members of invalid or improperly initialized fields. This led to an illegal pointer read, ultimately causing the application to crash.
Weakness: CWE-416
Which versions are affected by CVE-2026-57256?
It affects 2 products.
Products include Foxit Pdf Editor, Foxit Pdf Reader.
How do I fix CVE-2026-57256?
No fix has been published for CVE-2026-57256 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-2026-57256 being exploited?
There is no known exploitation of CVE-2026-57256 in the wild and no public exploit code.
Other vulnerabilities in Foxit Pdf Editor
Sources
Also known as GHSA-6m6w-86vv-j325.