Biosig libbiosig 3.9.0 ISHNE Parser heap-based overflow

Summaryinfo

A vulnerability was found in Biosig libbiosig 3.9.0. It has been classified as critical. This vulnerability affects unknown code of the component ISHNE Parser. Performing a manipulation results in heap-based overflow. This vulnerability is identified as CVE-2025-53853. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical has been found in Biosig libbiosig 3.9.0. This affects an unknown code block of the component ISHNE Parser. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as 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(). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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

It is possible to read the advisory at talosintelligence.com. This vulnerability is uniquely identified as CVE-2025-53853 since 07/23/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/03/2025).

The vulnerability scanner Nessus provides a plugin with the ID 260419 (Linux Distros Unpatched Vulnerability : CVE-2025-53853), 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 databases at Tenable (260419) and EUVD (EUVD-2025-25667). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Biosig

Name

• libbiosig

Version

• 3.9.0

CPE 2.3info

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CPE 2.2info

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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