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CVE-2020-27540

Estado: ModificadaCrítica (9.8)—

Bash injection vulnerability and bypass of signature verification in Rostelecom CS-C2SHW 5.0.082.1. The camera reads firmware update configuration from SD card file vc\version.json. fw-sign parameter and from this configuration is directly inserted into a bash command. Firmware update is run automatically if there is special file on the inserted SD card.

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)

Company — Cs-c2shw Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2020-27540",
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          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
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  "published": "2021-01-26T18:15:46.113",
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      "value": "Bash injection vulnerability and bypass of signature verification in Rostelecom CS-C2SHW 5.0.082.1. The camera reads firmware update configuration from SD card file vc\\version.json. fw-sign parameter and from this configuration is directly inserted into a bash command. Firmware update is run automatically if there is special file on the inserted SD card."
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      "lang": "es",
      "value": "Vulnerabilidad de inyección Bash y omisión de la verificación de firmas en Rostelecom CS-C2SHW versión 5.0.082.1. La cámara lee la configuración de actualización del firmware del archivo de la tarjeta SD vc\\version.json. El parámetro fw-sign y desde esta configuración es insertado directamente en un comando bash. La actualización del firmware se ejecuta automáticamente si existe un archivo especial en la tarjeta SD insertada"
    }
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  "lastModified": "2026-06-17T03:09:17.210",
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