How serious is CVE-2026-22891?

This vulnerability has a CVSS score of 9.8 out of 10, classified as CRITICAL severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2026-22891?

Yes, proof-of-concept exploit code for CVE-2026-22891 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2026-22891?

CVE-2026-22891 affects libbiosig project libbiosig. Check the full CVE details for specific version information.

How do I fix CVE-2026-22891?

To remediate CVE-2026-22891, check for security patches from libbiosig project. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2026-22891

Critical

|9.8

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

An attacker can execute arbitrary code on a system by tricking a user into opening a specially crafted Intan CLP file using the vulnerable version of the libbiosig library. This vulnerability requires the attacker to deliver the malicious file to the target, making it essential for users to be cautious about the files they open.

Technical Description

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.

CVSS Vector Analysis

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Confidentiality ImpactHigh

Integrity ImpactHigh

Availability ImpactHigh

ScopeUnchanged

Vector String

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Resources

Search for proof-of-concept code and exploit modules

GitHub Search Exploit-DB Nuclei Templates Metasploit Vulners

Official References

NIST NVD

Est. Bounty

$13,000($5K-$15K)

Vendor Response

Grade APatched in 2 days

Quick Information

Published

Mar 3, 2026

about 1 month ago

Last Modified

Mar 5, 2026

about 1 month ago

Vendor

libbiosig project

Product

libbiosig

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CVE-2025-64736High

An attacker can exploit a flaw in the libbiosig library to read sensitive information from memory by using a specially crafted .abf file. This requires the victim to open the malicious file, which could lead to unauthorized access to private data.