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CVE-2022-20789

Estado: ModificadaMedia (6.5)—

A vulnerability in the software upgrade process of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an authenticated, remote attacker to write arbitrary files on the affected system. This vulnerability is due to improper restrictions applied to a system script. An attacker could exploit this vulnerability by using crafted variables during the execution of a system upgrade. A successful exploit could allow the attacker to overwrite or append arbitrary data to system files using root-level privileges.

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)

Cisco — Unified Communications Manager

CWE

Referencias

JSON original (NVD)

Mostrar
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          "options": [
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          "timestamp": "2024-11-06T15:58:46.051269Z"
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  "published": "2022-04-21T19:15:08.630",
  "references": [
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  "descriptions": [
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      "lang": "en",
      "value": "A vulnerability in the software upgrade process of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an authenticated, remote attacker to write arbitrary files on the affected system. This vulnerability is due to improper restrictions applied to a system script. An attacker could exploit this vulnerability by using crafted variables during the execution of a system upgrade. A successful exploit could allow the attacker to overwrite or append arbitrary data to system files using root-level privileges."
    },
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      "value": "Una vulnerabilidad en el proceso de actualización de software de Cisco Unified Communications Manager (Unified CM) y Cisco Unified Communications Manager Session Management Edition (Unified CM SME) podría permitir a un atacante remoto autenticado escribir archivos arbitrarios en el sistema afectado. Esta vulnerabilidad es debido a restricciones inapropiadas aplicadas a un script del sistema. Un atacante podría explotar esta vulnerabilidad al usar variables diseñadas durante la ejecución de una actualización del sistema. Una explotación con éxito podría permitir al atacante sobrescribir o añadir datos arbitrarios a los archivos del sistema usando privilegios de nivel root"
    }
  ],
  "lastModified": "2026-06-17T04:25:06.847",
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