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CVE-2021-40222

Status: ModifiedHigh (7.2)—💥 PoC

Rittal CMC PU III Web management Version affected: V3.11.00_2. Version fixed: V3.17.10 is affected by a remote code execution vulnerablity. It is possible to introduce shell code to create a reverse shell in the PU-Hostname field of the TCP/IP Configuration dialog. Web application fails to sanitize user input on Network TCP/IP configuration page. This allows the attacker to inject commands as root on the device which will be executed once the data is received.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

💥 Public exploits

Exploit code or detection templates are publicly available. This is not the same as confirmed active exploitation (KEV), but it raises the risk: patch with priority.

⚠️ GitHub proofs of concept are not verified: some are fake or contain malware. Never run them outside an isolated lab.

Affected technologies (1)

Rittal — CMC PU III 7030.000 Firmware

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-40222",
  "cveTags": [],
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          "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
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      "value": "Rittal CMC PU III Web management Version affected: V3.11.00_2. Version fixed: V3.17.10 is affected by a remote code execution vulnerablity. It is possible to introduce shell code to create a reverse shell in the PU-Hostname field of the TCP/IP Configuration dialog. Web application fails to sanitize user input on Network TCP/IP configuration page. This allows the attacker to inject commands as root on the device which will be executed once the data is received."
    },
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      "lang": "es",
      "value": "Rittal CMC PU III Web management Versión afectada: V3.11.00_2. Versión corregida: V3.17.10 está afectada por una vulnerabilidad de ejecución de código remota. Es posible introducir código shell para crear un shell inverso en el campo PU-Hostname del diálogo de Configuración TCP/IP. La aplicación web no sanea la entrada del usuario en la página de configuración de la red TCP/IP. Esto permite al atacante inyectar comandos como root en el dispositivo que serán ejecutados una vez recibidos los datos"
    }
  ],
  "lastModified": "2026-06-17T04:06:39.960",
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