🛡️ CVE-2026-22891 — libbiosig

🔴 CVSS 9.8 — Critical ⚠️ Exploit Public CWE-122 NVD

9.8

CVSS Score

0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-22891 is classified as CWE-122: Heap-based Buffer Overflow. A write past the end of a heap allocation corrupts allocator metadata or neighbouring objects.

Affected software

CVE-2026-22891 is recorded against 1 package.

libbiosig

Timeline and source

Published on 3 March 2026 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from NVD.

References

talosintelligence.com
www.talosintelligence.com

CVE-2026-22891 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Debian Ubuntu

Details

Severity CRITICAL

CVSS Score 9.8

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

CWE CWE-122

Public Exploit ⚠️ Yes

Source NVD

Published 2026-03-03

Updated 2026-08-11

Modified 2026-06-17

Fix URL N/A

Affected Packages

Software	From version	Fixed in
libbiosig	—	—

References

Exploit, Third Party Advisory https://talosintelligence.com/vulnerability_reports/TALOS-2026-2361

Exploit, Third Party Advisory https://www.talosintelligence.com/vulnerability_reports/TALOS-2026-2361

🔗 NVD 🔗 Mitre

Similar Threats

Exploit Protection

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