CVE-2021-21740

Severity Score

2.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

There is an information leak vulnerability in the digital media player (DMS) of ZTE's residential gateway product. The attacker could insert the USB disk with the symbolic link into the residential gateway, and access unauthorized directory information through the symbolic link, causing information leak.

Se presenta una vulnerabilidad de filtrado de información en el reproductor multimedia digital (DMS) del producto de puerta de enlace residencial de ZTE. El atacante podría insertar el disco USB con el enlace simbólico en el gateway residencial y acceder a información de directorio no autorizada mediante el enlace simbólico, causando un filtrado de información

*Credits: N/A

Attack Vector

Physical

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

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

CWE

CWE-59: Improper Link Resolution Before File Access ('Link Following')

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=1017244	2021-08-17

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 H2640 Firmware Search vendor "Zte" for product "Zxhn H2640 Firmware"	10.0.0c6_ty Search vendor "Zte" for product "Zxhn H2640 Firmware" and version "10.0.0c6_ty"	-	Affected	in	Zte Search vendor "Zte"	Zxhn H2640 Search vendor "Zte" for product "Zxhn H2640"	-	-	Safe