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CVE-2021-34979

Estado: ModificadaAlta (8.8)—

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6260 1.1.0.78_1.0.1 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of SOAP requests. When parsing the SOAPAction header, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-13512.

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).

Tecnologías afectadas (1)

Netgear — R6260 Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-34979",
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          "accessVector": "ADJACENT_NETWORK",
          "vectorString": "AV:A/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
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          "confidentialityImpact": "COMPLETE"
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        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.5,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
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  "published": "2022-01-13T22:15:12.717",
  "references": [
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "value": "CWE-120"
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  "descriptions": [
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      "lang": "en",
      "value": "This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6260 1.1.0.78_1.0.1 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of SOAP requests. When parsing the SOAPAction header, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-13512."
    },
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      "lang": "es",
      "value": "Esta vulnerabilidad permite a atacantes adyacentes a la red ejecutar código arbitrario en las instalaciones afectadas de los routers NETGEAR R6260 versión 1.1.0.78_1.0.1. No es requerida una autenticación  para explotar esta vulnerabilidad. El fallo específico se presenta en el manejo de las peticiones SOAP. Cuando es analizada el encabezado SOAPAction, el proceso no comprueba correctamente la longitud de los datos suministrados por el usuario antes de copiarlos en un búfer de longitud fija. Un atacante puede aprovechar esta vulnerabilidad para ejecutar código en el contexto de root. Fue ZDI-CAN-13512"
    }
  ],
  "lastModified": "2026-06-17T03:56:55.400",
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