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CVE-2025-52461

Libbiosig out-of-bounds read

8.2 HIGHPublic exploitEPSS 0.51%
  1. Published25 Aug 2025

Description

An out-of-bounds read vulnerability exists in the Nex parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted .nex file can lead to an information leak. An attacker can provide a malicious file to trigger this vulnerability.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityLow
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Affected products

Libbiosig3.9.0

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2025-52461 being actively exploited?

CVE-2025-52461 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.51%.

How severe is CVE-2025-52461?

CVE-2025-52461 has a CVSS 3.1 base score of 8.2, rated high. EPSS estimates a 0.51% probability of exploitation.

Which products are affected by CVE-2025-52461?

Affected products include Libbiosig.

How do I fix CVE-2025-52461?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.