What is CVE-2026-22891?

CVE-2026-22891 is a critical-severity vulnerability in Libbiosig_project Libbiosig, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-03-03.

How severe is CVE-2026-22891?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Libbiosig_project Libbiosig

CVE-2026-22891

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 attack…

Vulnerability class: Buffer Overflow

EPSS: 0.006 (43.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Libbiosig_project Libbiosig — versions 3.9.2
The Biosig Project Libbiosig — versions 3.9.2, Master Branch (db9a9a63)

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

talos-cna@cisco.com (Exploit, Third Party Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2026-22891?: CVE-2026-22891 is a critical-severity vulnerability in Libbiosig_project Libbiosig, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-03-03.
How severe is CVE-2026-22891?: Critical severity. CVSS v3 base score is 9.8 out of 10.