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High severity7.5NVD Advisory· Published Dec 21, 2020· Updated Jun 17, 2026

CVE-2020-6881

CVE-2020-6881

Description

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:

AI Insight

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Affected products

9
  • Zte/Zxhn E8810 Firmware2 versions
    cpe:2.3:o:zte:zxhn_e8810_firmware:1.0.26:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:zte:zxhn_e8810_firmware:1.0.26:*:*:*:*:*:*:*
    • cpe:2.3:o:zte:zxhn_e8810_firmware:2.0.1:*:*:*:*:*:*:*
  • Zte/Zxhn E8820 Firmware2 versions
    cpe:2.3:o:zte:zxhn_e8820_firmware:1.1.3:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:zte:zxhn_e8820_firmware:1.1.3:*:*:*:*:*:*:*
    • cpe:2.3:o:zte:zxhn_e8820_firmware:2.0.13:*:*:*:*:*:*:*
  • Zte/Zxhn E8822 Firmware
    cpe:2.3:o:zte:zxhn_e8822_firmware:2.0.13:*:*:*:*:*:*:*
  • ZTE/E8810/E8820/E8822 series routersdescription
  • Zte/ZXHN E8810llm-create
    Range: V1.0.26, V2.0.1
  • Zte/ZXHN E8820llm-create
    Range: V1.1.3L, V2.0.13
  • Zte/ZXHN E8822llm-create
    Range: V2.0.13

Patches

Vulnerability mechanics

References

1

News mentions

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