CVE-2021-21728

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A ZTE product has a configuration error vulnerability. Because a certain port is open by default, an attacker can consume system processing resources by flushing a large number of packets to the port, and successfully exploiting this vulnerability could reduce system processing capabilities. This affects: ZXA10 C300M all versions up to V4.3P8.

Un producto ZTE presenta una vulnerabilidad de error de configuración. Debido a que un determinado puerto está abierto por defecto, un atacante puede consumir recursos de procesamiento del sistema al descargar una gran cantidad de paquetes en el puerto, y explotar con éxito esta vulnerabilidad podría reducir las capacidades de procesamiento del sistema. Esto afecta: ZXA10 C300M todas las versiones hasta V4.3P8

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

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

2021-01-04 CVE Reserved
2021-04-09 CVE Published
2023-12-24 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-400: Uncontrolled Resource Consumption

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1014784	2021-04-20

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Zte Search vendor "Zte"	Zxa10 C300m Firmware Search vendor "Zte" for product "Zxa10 C300m Firmware"	< 4.5 Search vendor "Zte" for product "Zxa10 C300m Firmware" and version " < 4.5"	-	Affected	in	Zte Search vendor "Zte"	Zxa10 C300m Search vendor "Zte" for product "Zxa10 C300m"	-	-	Safe