Biosig libbiosig 3.9.2 Intan CLP Parser heap-based overflow

Summaryinfo

A vulnerability was found in Biosig libbiosig 3.9.2. It has been rated as critical. Impacted is an unknown function of the component Intan CLP Parser. The manipulation leads to heap-based overflow. This vulnerability is documented as CVE-2026-22891. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Biosig libbiosig 3.9.2. It has been rated as critical. This issue affects an unknown function of the component Intan CLP 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. The summary by CVE is:

A heap-based buffer overflow vulnerability exists in the Intan CLP parsing functionality of The Biosig Project libbiosig 3.9.2 and Master Branch (db9a9a63). A specially crafted Intan CLP 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. The identification of this vulnerability is CVE-2026-22891 since 01/28/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful 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 03/09/2026).

The vulnerability scanner Nessus provides a plugin with the ID 300926 (Linux Distros Unpatched Vulnerability : CVE-2026-22891), 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 (300926). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• Biosig

Name

• libbiosig

Version

• 3.9.2

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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