CVE-2021-21739 Information

Description

A ZTE’s product of the transport network access layer has a security vulnerability. Because the system does not sufficiently verify the data reliability attackers could replace an authenticated optical module on the equipment with an unauthenticated one bypassing system authentication and detection thus affecting signal transmission. This affects: <ZXCTN 6120H><V5.10.00B24>

CVSS Vector

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1017024

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

4.6