FKIE_CVE-2020-6881

Vulnerability from fkie_nvd - Published: 2020-12-21 18:15 - Updated: 2026-06-17 03:23
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
ZTE E8810/E8820/E8822 series routers have an MQTT DoS vulnerability, which is caused by the failure of the device to verify the validity of abnormal messages. A remote attacker could connect to the MQTT server and send an MQTT exception message to the specified device, which will cause the device to deny service. This affects:<ZXHN E8810, ZXHN E8820, ZXHN E8822><E8810 V1.0.26, E8810 V2.0.1, E8820 V1.1.3L, E8820 V2.0.13, E8822 V2.0.13>
References
psirt@zte.com.cnhttp://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014202Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014202Vendor Advisory
Impacted products
Vendor Product Version
zte zxhn_e8810_firmware 1.0.26
zte zxhn_e8810_firmware 2.0.1
zte zxhn_e8810 -
zte zxhn_e8820_firmware 1.1.3
zte zxhn_e8820_firmware 2.0.13
zte zxhn_e8820 -
zte zxhn_e8822_firmware 2.0.13
zte zxhn_e8822 -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "\u003cZXHN E8810, ZXHN E8820, ZXHN E8822\u003e",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "\u003cE8810 V1.0.26, E8810 V2.0.1, E8820 V1.1.3L,  E8820 V2.0.13, E8822 V2.0.13\u003e"
            }
          ]
        }
      ],
      "source": "psirt@zte.com.cn"
    }
  ],
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "ZTE E8810/E8820/E8822 series routers have an MQTT DoS vulnerability, which is caused by the failure of the device to verify the validity of abnormal messages. A remote attacker could connect to the MQTT server and send an MQTT exception message to the specified device, which will cause the device to deny service. This affects:\u003cZXHN E8810, ZXHN E8820, ZXHN E8822\u003e\u003cE8810 V1.0.26, E8810 V2.0.1, E8820 V1.1.3L, E8820 V2.0.13, E8822 V2.0.13\u003e"
    },
    {
      "lang": "es",
      "value": "Los enrutadores de la serie ZTE E8810/E8820/E8822, presentan una vulnerabilidad de DoS de MQTT, que es causada por el fallo del dispositivo para verificar la validez de mensajes anormales.\u0026#xa0;Un atacante remoto podr\u00eda conectarse al servidor MQTT y enviar un mensaje de excepci\u00f3n MQTT al dispositivo especificado, lo que causar\u00e1 que el dispositivo deniegue el servicio.\u0026#xa0;Esto afecta a: (ZXHN versi\u00f3n E8810, ZXHN versi\u00f3n E8820, ZXHN versi\u00f3n E8822)(E8810 versi\u00f3n V1.0.26, E8810 versi\u00f3n V2.0.1, E8820 versi\u00f3n V1.1.3L, E8820 versi\u00f3n V2.0.13, E8822 versi\u00f3n V2.0.13)"
    }
  ],
  "id": "CVE-2020-6881",
  "lastModified": "2026-06-17T03:23:58.233",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-12-21T18:15:16.713",
  "references": [
    {
      "source": "psirt@zte.com.cn",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014202"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014202"
    }
  ],
  "sourceIdentifier": "psirt@zte.com.cn",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-346"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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