CVE-2021-21724

Severity Score

4.4

*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 memory leak vulnerability. Due to the product's improper handling of memory release in certain scenarios, a local attacker with device permissions repeatedly attenuated the optical signal to cause memory leak and abnormal service. This affects: ZXR10 8900E, all versions up to V3.03.20R2B30P1.

Un producto ZTE presenta una vulnerabilidad de pérdida de la memoria. Debido al manejo inapropiado de liberación de la memoria del producto en determinados escenarios, un atacante local con permisos de dispositivo atenuó repetidamente la señal óptica para causar pérdida de la memoria y un servicio anormal. Esto afecta a: ZXR10 8900E, todas las versiones hasta V3.03.20R2B30P1

*Credits: N/A

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Local

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
2021-02-26 CVE Published
2023-03-08 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-401: Missing Release of Memory after Effective Lifetime

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=1014584	2021-03-04

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Zte Search vendor "Zte"	Zxr10 8900e Firmware Search vendor "Zte" for product "Zxr10 8900e Firmware"	<= 3.03.20r2b30p1 Search vendor "Zte" for product "Zxr10 8900e Firmware" and version " <= 3.03.20r2b30p1"	-	Affected	in	Zte Search vendor "Zte"	Zxr10 8900e Search vendor "Zte" for product "Zxr10 8900e"	-	-	Safe