CVE-2025-53518 Integer overflow in libbiosig

Critical 9.8 Published 25 Aug 2025 Updated 3 Nov 2025

An integer overflow in libbiosig allows arbitrary code execution via a specially crafted ABF file, affecting applications using this library.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2025-53518?

CVE-2025-53518 is a critical vulnerability in The Biosig Project libbiosig, published on 25 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An integer overflow vulnerability exists in the ABF parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted ABF file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.

Weakness: CWE-190

Which versions are affected by CVE-2025-53518?

It affects 1 product.

Products include Libbiosig Project Libbiosig.

How do I fix CVE-2025-53518?

Upgrade to a fixed version.

Is CVE-2025-53518 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-53518 exists.

Sources

Also known as DEBIAN-CVE-2025-53518, GHSA-jhgp-m4v7-w2p5, UBUNTU-CVE-2025-53518.