CVE-2026-91815 Foxit PDF Editor/Reader JPEG2000 Parsing Memory Corruption Remote Code Execution Vulnerability
Attackers can execute arbitrary code or cause denial of service via malicious PDF files exploiting a heap buffer overflow in JPEG2000 parsing.
- 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-2026-91815?
CVE-2026-91815 is a high-severity memory corruption 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
Foxit PDF Editor/Reader does not perform sufficient verification of the JPEG2000 image metadata in the PDF file, which leads to out-of-bounds write in the heap buffer during decoding, potentially causing the program to crash and introducing the risk of arbitrary code execution.
Weakness: CWE-787
Which versions are affected by CVE-2026-91815?
It affects 2 products.
Products include Foxit Pdf Editor, Foxit Pdf Reader.
How do I fix CVE-2026-91815?
No fix has been published for CVE-2026-91815 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-91815 being exploited?
There is no known exploitation of CVE-2026-91815 in the wild and no public exploit code.
Other vulnerabilities in Foxit Pdf Editor
Sources
Also known as GHSA-37h4-4ww6-hgx5.