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CVE-2020-6881

HIGH
7.5
CVSS Score
Published: December 21, 2020 at 05:18 PM UTC
Updated: June 17, 2026 at 03:23 AM UTC
6 products affected across 1 vendorZxhn E8820 FirmwareZxhn E8822 FirmwareZxhn E8810 Firmware

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Severity
HIGH7.5
Exploit prediction
EPSS 0.6%

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:<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>

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCVendor Advisory
Source: [email protected]
http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014202

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-346

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