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CVE-2026-5350

Estado: AnalizadaAlta (7.4)—

A security flaw has been discovered in Trendnet TEW-657BRM 1.00.1. The impacted element is the function update_pcdb of the file /setup.cgi. The manipulation of the argument mac_pc_dba results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. The vendor confirms, that "[t]he product in question (...) has been discontinued and end of life since June 23, 2011, that is more than 14 years ago. We no longer provide support for this product, so we are not able to confirm the vulnerabilities.

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We will make an announcement on our website's product support page and notify customers who registered their products with us." This vulnerability only affects products that are no longer supported by the maintainer.

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 remoto (CWE-119/121) en servicio web CGI accesible con autenticación (PR:L, AV:N). Permite ejecución arbitraria de código y posible escalada de privilegios en router embebido.

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

Threat Intelligence ProgramPrivileged Account ManagementExecution PreventionDisable or Remove Feature or ProgramApplication Isolation and SandboxingExploit Protection

Tecnologías afectadas (1)

Trendnet — Tew-657brm Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-5350",
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          "modifiedAttackVector": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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      "tags": [
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      "source": "cna@vuldb.com",
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          "value": "CWE-119"
        },
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          "lang": "en",
          "value": "CWE-121"
        }
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    }
  ],
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      "lang": "en",
      "value": "A security flaw has been discovered in Trendnet TEW-657BRM 1.00.1. The impacted element is the function update_pcdb of the file /setup.cgi. The manipulation of the argument mac_pc_dba results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks. The vendor confirms, that \"[t]he product in question (...) has been discontinued and end of life since June 23, 2011, that is more than 14 years ago. We no longer provide support for this product, so we are not able to confirm the vulnerabilities. We will make an announcement on our website's product support page and notify customers who registered their products with us.\" This vulnerability only affects products that are no longer supported by the maintainer."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto una falla de seguridad en Trendnet TEW-657BRM 1.00.1. El elemento afectado es la función update_pcdb del archivo /setup.cgi. La manipulación del argumento mac_pc_dba resulta en un desbordamiento de búfer basado en pila. El ataque puede ser lanzado remotamente. El exploit ha sido liberado al público y puede ser usado para ataques. El fabricante confirma que 'El producto en cuestión (...) ha sido descontinuado y ha llegado al fin de su vida útil desde el 23 de junio de 2011, es decir, hace más de 14 años. Ya no ofrecemos soporte para este producto, por lo que no podemos confirmar las vulnerabilidades. Haremos un anuncio en la página de soporte de productos de nuestro sitio web y notificaremos a los clientes que registraron sus productos con nosotros.' Esta vulnerabilidad solo afecta a productos que ya no cuentan con soporte por parte del mantenedor."
    }
  ],
  "lastModified": "2026-07-24T20:10:00.147",
  "configurations": [
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}