Biosig libbiosig 3.9.0 MFER Parser heap-based overflow

Summaryinfo

A vulnerability was found in Biosig libbiosig 3.9.0 and classified as critical. This affects an unknown part of the component MFER Parser. Such manipulation leads to heap-based overflow. This vulnerability is referenced as CVE-2025-53557. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Biosig libbiosig 3.9.0. It has been rated as critical. Affected by this issue is an unknown code of the component MFER Parser. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. CVE summarizes:

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

The advisory is available at talosintelligence.com. This vulnerability is handled as CVE-2025-53557 since 07/23/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/03/2025).

The vulnerability scanner Nessus provides a plugin with the ID 260413 (Linux Distros Unpatched Vulnerability : CVE-2025-53557), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (260413). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Biosig

Name

• libbiosig

Version

• 3.9.0

CPE 2.3info

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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