Vulnerability · Published Aug 25, 2025 · Assigned by talos
CVE-2025-52461
High 8.2
In plain English
A high-severity out-of-bounds read 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 0.5% (higher than 44% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.2High
Exploit odds (30 days)0.5%top 56.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | biosig | no fix listed | DEBIAN-CVE-2025-52461 |
| Debian:13 | biosig | no fix listed | DEBIAN-CVE-2025-52461 |
| Debian:14 | biosig | 3.9.5-1 | DEBIAN-CVE-2025-52461 |
| Ubuntu:25.10 | biosig | no fix listed | UBUNTU-CVE-2025-52461 |
| Ubuntu:26.10 | biosig | no fix listed | UBUNTU-CVE-2025-52461 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| The Biosig Project | libbiosig | 3.9.0Master Branch (35a819fa) |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H