CVE-2026-12218

Estado: AplazadaAlta (7.3)—

A vulnerability was detected in Yealink SIP-T46U 108.87.50.1. The affected element is the function StartReportInformation of the file /api/inner/beforewifitest of the component Web FastCGI Service. The manipulation of the argument port results in stack-based buffer overflow. Access to the local network is required for this attack. The exploit is now public and may be used. The vendor was contacted early about this disclosure and is working on a patch to fix it.

CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Puntuación base: 7.3

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.37%
Percentil entre todas las CVEs puntuadas: 29
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement85 %
Impacto principalT1059 Command and Scripting Interpreterexecution80 %

Vector CVSS indica AV:A (red adyacente) con PR:L (requiere privilegios locales). Stack-based buffer overflow en servicio web remoto permite ejecución de código. Acceso local requerido, típico de T1210.

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 Management Disable or Remove Feature or Program Vulnerability Scanning Threat Intelligence Program Restrict Web-Based Content Network Segmentation

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Yealink — Sip-t46u^AI

CWE

CWE-119, CWE-121

Referencias

JSON original (NVD)

Mostrar

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          "options": [
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          ],
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          "modules": [
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          "product": "SIP-T46U",
          "versions": [
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  "published": "2026-06-15T06:16:22.673",
  "references": [
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      "url": "http://cdn2.v50to.cc/T46U/T46U_beforewifitest_stack_overflow.zip",
      "source": "cna@vuldb.com"
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      "url": "https://vuldb.com/cve/CVE-2026-12218",
      "source": "cna@vuldb.com"
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    {
      "url": "https://vuldb.com/submit/834193",
      "source": "cna@vuldb.com"
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    {
      "url": "https://vuldb.com/vuln/370861",
      "source": "cna@vuldb.com"
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      "url": "https://vuldb.com/vuln/370861/cti",
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          "value": "CWE-119"
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          "lang": "en",
          "value": "CWE-121"
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    }
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  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability was detected in Yealink SIP-T46U 108.87.50.1. The affected element is the function StartReportInformation of the file /api/inner/beforewifitest of the component Web FastCGI Service. The manipulation of the argument port results in stack-based buffer overflow. Access to the local network is required for this attack. The exploit is now public and may be used. The vendor was contacted early about this disclosure and is working on a patch to fix it."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad fue detectada en Yealink SIP-T46U 108.87.50.1. El elemento afectado es la función StartReportInformation del archivo /api/inner/beforewifitest del componente Web FastCGI Service. La manipulación del argumento puerto resulta en desbordamiento de búfer basado en pila. Se requiere acceso a la red local para este ataque. El exploit es ahora público y puede ser usado. El proveedor fue contactado con antelación sobre esta divulgación, pero no respondió de ninguna manera."
    }
  ],
  "lastModified": "2026-07-24T12:10:00.210",
  "sourceIdentifier": "cna@vuldb.com"
}