CVE-2025-2337 tbeu matio mat.c Mat_VarPrint heap-based overflow

Medium 5.3 Published 16 Mar 2025 Updated 24 Jul 2025

A heap-based buffer overflow in the Matio library allows remote attackers to execute arbitrary code or cause denial of service via crafted input.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2025-2337?

CVE-2025-2337 is a medium-severity memory corruption vulnerability in tbeu matio, published on 16 Mar 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A vulnerability, which was classified as critical, has been found in tbeu matio 1.5.28. This issue affects the function Mat_VarPrint of the file src/mat.c. The manipulation leads to heap-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Weakness: CWE-122, CWE-119

Which versions are affected by CVE-2025-2337?

It affects 1 product.

Products include Matio Project Matio.

How do I fix CVE-2025-2337?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2025-2337 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-2337 exists.

Sources

Also known as DEBIAN-CVE-2025-2337, GHSA-jcxj-fvhg-33mx, UBUNTU-CVE-2025-2337.