CVE-2020-6881

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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>

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. Un atacante remoto podría conectarse al servidor MQTT y enviar un mensaje de excepción MQTT al dispositivo especificado, lo que causará que el dispositivo deniegue el servicio. Esto afecta a: (ZXHN versión E8810, ZXHN versión E8820, ZXHN versión E8822)(E8810 versión V1.0.26, E8810 versión V2.0.1, E8820 versión V1.1.3L, E8820 versión V2.0.13, E8822 versión V2.0.13)

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-01-13 CVE Reserved
2020-12-21 CVE Published
2023-09-06 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-346: Origin Validation Error

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014202	2020-12-22

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Zte Search vendor "Zte"	Zxhn E8810 Firmware Search vendor "Zte" for product "Zxhn E8810 Firmware"	1.0.26 Search vendor "Zte" for product "Zxhn E8810 Firmware" and version "1.0.26"	-	Affected	in	Zte Search vendor "Zte"	Zxhn E8810 Search vendor "Zte" for product "Zxhn E8810"	-	-	Safe
Zte Search vendor "Zte"	Zxhn E8810 Firmware Search vendor "Zte" for product "Zxhn E8810 Firmware"	2.0.1 Search vendor "Zte" for product "Zxhn E8810 Firmware" and version "2.0.1"	-	Affected	in	Zte Search vendor "Zte"	Zxhn E8810 Search vendor "Zte" for product "Zxhn E8810"	-	-	Safe
Zte Search vendor "Zte"	Zxhn E8820 Firmware Search vendor "Zte" for product "Zxhn E8820 Firmware"	1.1.3 Search vendor "Zte" for product "Zxhn E8820 Firmware" and version "1.1.3"	-	Affected	in	Zte Search vendor "Zte"	Zxhn E8820 Search vendor "Zte" for product "Zxhn E8820"	-	-	Safe
Zte Search vendor "Zte"	Zxhn E8820 Firmware Search vendor "Zte" for product "Zxhn E8820 Firmware"	2.0.13 Search vendor "Zte" for product "Zxhn E8820 Firmware" and version "2.0.13"	-	Affected	in	Zte Search vendor "Zte"	Zxhn E8820 Search vendor "Zte" for product "Zxhn E8820"	-	-	Safe
Zte Search vendor "Zte"	Zxhn E8822 Firmware Search vendor "Zte" for product "Zxhn E8822 Firmware"	2.0.13 Search vendor "Zte" for product "Zxhn E8822 Firmware" and version "2.0.13"	-	Affected	in	Zte Search vendor "Zte"	Zxhn E8822 Search vendor "Zte" for product "Zxhn E8822"	-	-	Safe