FKIE_CVE-2021-34795

Vulnerability from fkie_nvd - Published: 2021-11-04 16:15 - Updated: 2026-06-17 03:56
Severity
10.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Multiple vulnerabilities in the web-based management interface of the Cisco Catalyst Passive Optical Network (PON) Series Switches Optical Network Terminal (ONT) could allow an unauthenticated, remote attacker to perform the following actions: Log in with a default credential if the Telnet protocol is enabled Perform command injection Modify the configuration For more information about these vulnerabilities, see the Details section of this advisory.
References
psirt@cisco.comhttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-catpon-multivulns-CE3DSYGrPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-catpon-multivulns-CE3DSYGrPatch, Vendor Advisory
Impacted products
Vendor Product Version
cisco catalyst_pon_switch_cgp-ont-1p_firmware *
cisco catalyst_pon_switch_cgp-ont-1p *
cisco catalyst_pon_switch_cgp-ont-4p_firmware *
cisco catalyst_pon_switch_cgp-ont-4p *
cisco catalyst_pon_switch_cgp-ont-4pvc_firmware *
cisco catalyst_pon_switch_cgp-ont-4pvc *
cisco catalyst_pon_switch_cgp-ont-4tvcw_firmware *
cisco catalyst_pon_switch_cgp-ont-4tvcw *
cisco catalyst_pon_switch_cgp-ont-4pv_firmware *
cisco catalyst_pon_switch_cgp-ont-4pv *
To clipboard 

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          "vendor": "Cisco",
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  "descriptions": [
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      "lang": "en",
      "value": "Multiple vulnerabilities in the web-based management interface of the Cisco Catalyst Passive Optical Network (PON) Series Switches Optical Network Terminal (ONT) could allow an unauthenticated, remote attacker to perform the following actions: Log in with a default credential if the Telnet protocol is enabled Perform command injection Modify the configuration For more information about these vulnerabilities, see the Details section of this advisory."
    },
    {
      "lang": "es",
      "value": "M\u00faltiples vulnerabilidades en la interfaz de administraci\u00f3n basada en web de los Switches de la serie Cisco Catalyst Passive Optical Network (PON) Optical Network Terminal (ONT) podr\u00edan permitir a un atacante remoto no autenticado llevar a cabo las siguientes acciones: Iniciar sesi\u00f3n con una credencial predeterminada si el protocolo Telnet est\u00e1 habilitado Llevar a cabo una inyecci\u00f3n de comandos Modificar la configuraci\u00f3n Para m\u00e1s informaci\u00f3n sobre estas vulnerabilidades, consulte la secci\u00f3n Detalles de este aviso"
    }
  ],
  "id": "CVE-2021-34795",
  "lastModified": "2026-06-17T03:56:35.343",
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        "baseSeverity": "HIGH",
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          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
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          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
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            {
              "technicalImpact": "total"
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          "role": "CISA Coordinator",
          "timestamp": "2024-11-07T21:55:51.421348Z",
          "version": "2.0.3"
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  "published": "2021-11-04T16:15:09.053",
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}



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