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CVE-2025-54482

Estado: ModificadaCrítica (9.8)—

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 8751 of biosig.c on the current master branch (35a819fa), when the Tag is 4:

Detalles técnicos trazas, registros y código del informe original
				else if (tag==4) {
					// SPR
					if (len>4) fprintf(stderr,"Warning MFER tag4 incorrect length %i>4\n",len);
					curPos += ifread(buf,1,len,hdr);

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Buffer overflow en parser MFER (AV:N, sin autenticación) permite RCE. Archivo malicioso expuesto en aplicación vulnerable desencadena desbordamiento de pila en biosig.c:8751.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software InstallationLimit Access to Resource Over Network

Tecnologías afectadas (1)

Libbiosig Project — Libbiosig

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-54482",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-54482",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
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          ],
          "version": "2.0.3",
          "timestamp": "2025-08-25T19:09:29.522501Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "talos-cna@cisco.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "talos-cna@cisco.com",
      "affectedData": [
        {
          "vendor": "The Biosig Project",
          "product": "libbiosig",
          "versions": [
            {
              "status": "affected",
              "version": "3.9.0"
            },
            {
              "status": "affected",
              "version": "Master Branch (35a819fa)"
            }
          ]
        }
      ]
    }
  ],
  "published": "2025-08-25T14:15:33.897",
  "references": [
    {
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2025-2234",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "talos-cna@cisco.com"
    },
    {
      "url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2234",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "talos-cna@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "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 8751 of biosig.c on the current master branch (35a819fa), when the Tag is 4:\r\n\r\n\t\t\t\telse if (tag==4) {\r\n\t\t\t\t\t// SPR\r\n\t\t\t\t\tif (len>4) fprintf(stderr,\"Warning MFER tag4 incorrect length %i>4\\n\",len);\r\n\t\t\t\t\tcurPos += ifread(buf,1,len,hdr);"
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de desbordamiento de búfer en la pila en la funcionalidad de análisis MFER de The Biosig Project libbiosig 3.9.0 y Master Branch (35a819fa). Un archivo MFER especialmente manipulado puede provocar la ejecución de código arbitrario. Un atacante puede proporcionar un archivo malicioso para activar esta vulnerabilidad. Esta vulnerabilidad se manifiesta en la línea 8751 de biosig.c en la rama maestra actual (35a819fa), cuando la etiqueta es 4: else if (tag==4) { // SPR if (len>4) fprintf(stderr,\"Warning MFER tag4 incorrect length %i>4\\n\",len); curPos += ifread(buf,1,len,hdr);"
    }
  ],
  "lastModified": "2026-06-17T09:40:11.030",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:libbiosig_project:libbiosig:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4893D615-FD95-4393-A5B0-E1BE19F180A6",
              "versionEndExcluding": "3.9.1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "talos-cna@cisco.com"
}