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CVE-2026-20199

Estado: AnalizadaAlta (7.2)—

A vulnerability in the SSL certificate handling of Cisco ThousandEyes Virtual Appliance could allow an authenticated, remote attacker to execute commands on the underlying operating system as the root user.

This vulnerability is due to insufficient validation of user-supplied input. An authenticated attacker could exploit this vulnerability by uploading a crafted certificate to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system. To exploit this vulnerability, the attacker must have valid administrative credentials.

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.

AV:N y PR:H indican explotación remota con privilegios administrativos previos (T1210). El texto confirma ejecución arbitraria como root tras validación insuficiente de certificado (CWE-74), lo que resulta en T1059 e impacto de escalada T1068 (acceso root).

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)

Cisco — Thousandeyes Virtual Appliance

CWE

Referencias

JSON original (NVD)

Mostrar
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  "metrics": {
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          "options": [
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  "published": "2026-05-20T17:16:20.100",
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      "description": [
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  "descriptions": [
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      "lang": "en",
      "value": "A vulnerability in the SSL certificate handling of Cisco ThousandEyes Virtual Appliance could allow an authenticated, remote attacker to execute commands on the underlying operating system as the root user.\r\n\r This vulnerability is due to insufficient validation of user-supplied input. An authenticated attacker could exploit this vulnerability by uploading a crafted certificate to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system. To exploit this vulnerability, the attacker must have valid administrative credentials."
    },
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      "lang": "es",
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    }
  ],
  "lastModified": "2026-07-23T12:10:00.110",
  "configurations": [
    {
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        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:cisco:thousandeyes_virtual_appliance:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "0.262.0"
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          "operator": "OR"
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  "sourceIdentifier": "psirt@cisco.com"
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