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Vulnerability · Published Aug 25, 2025 · Assigned by talos

CVE-2025-54462

Critical 9.8

In plain English

A critical-severity heap buffer overflow in libbiosig from The Biosig Project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.7%top 45.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A heap-based buffer overflow 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 arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12biosigno fix listedDEBIAN-CVE-2025-54462
Debian:13biosigno fix listedDEBIAN-CVE-2025-54462
Debian:14biosig3.9.5-1DEBIAN-CVE-2025-54462
Ubuntu:25.10biosigno fix listedUBUNTU-CVE-2025-54462
Ubuntu:26.10biosigno fix listedUBUNTU-CVE-2025-54462

Affected products (as reported)

VendorProductVersions
The Biosig Project libbiosig 3.9.0Master Branch (35a819fa)

Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References