---
cve: "CVE-2025-54483"
severity: "CRITICAL"
cvss: 9.8
epss: "0.7%"
vendor: "The Biosig Project"
kev: false
exploited: false
published: "2025-08-25 14:15:34"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-10-27T11:24:20+01:00"
---

# CVE-2025-54483

> 9.8 CRITICAL

## Beschreibung

A stack-based buffer overflow vulnerability exists in the MFER parsing functionality of The Biosig Project libbiosig 3.9.0 and Master Branch (35a819fa). A specially crafted MFER file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.This vulnerability manifests on line 8759 of biosig.c on the current master branch (35a819fa), when the Tag is 5:

				else if (tag==5)     //0x05: number of channels
				{
					uint16_t oldNS=hdr->NS;
					if (len>4) fprintf(stderr,"Warning MFER tag5 incorrect length %i>4\n",len);
					curPos += ifread(buf,1,len,hdr);

## CNA-Record (Kanon, cvelistV5)

- CNA: **talos**
- State: PUBLISHED
- Stand: 2025-11-03 18:13:24
- CNA-CVSS: **9.8** (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **yes**
  - Technical Impact: **total**

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Schwachstellen-Klasse

- **CWE-121** — Stack-based Buffer Overflow
  A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

## Referenzen

- <https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234>
- <https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2234>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2025-54483/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_