CVE-2020-6881
First published: Mon Dec 21 2020(Updated: )
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>
Credit: psirt@zte.com.cn
| Affected Software | Affected Version | How to fix |
|---|---|---|
| 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 |
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Frequently Asked Questions
What is the vulnerability ID of this issue?
The vulnerability ID is CVE-2020-6881.
What is the severity of CVE-2020-6881?
The severity of CVE-2020-6881 is high (7.5).
Which ZTE router models are affected by CVE-2020-6881?
ZTE E8810/E8820/E8822 series routers are affected by CVE-2020-6881.
What is the cause of the MQTT DoS vulnerability in ZTE routers?
The vulnerability is caused by the failure of the device to verify the validity of abnormal messages.
How can an attacker exploit CVE-2020-6881?
A remote attacker could connect to the MQTT server and send an MQTT exception message to the specified device, causing a denial-of-service condition.
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- vendor/zte
- canonical/zte zxhn e8810 firmware
- version/zte zxhn e8810 firmware/1.0.26
- version/zte zxhn e8810 firmware/2.0.1
- canonical/zte zxhn e8810
- canonical/zte zxhn e8820 firmware
- version/zte zxhn e8820 firmware/1.1.3
- version/zte zxhn e8820 firmware/2.0.13
- canonical/zte zxhn e8820
- canonical/zte zxhn e8822 firmware
- version/zte zxhn e8822 firmware/2.0.13
- canonical/zte zxhn e8822