#VU51246 Improper Authentication in ZyXEL Communications Corp. products - CVE-2020-28899
Published: March 6, 2021
Vulnerability identifier: #VU51246
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-28899
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
LTE4506-M606
LTE7460-M608
WAH7706
LTE4506-M606
LTE7460-M608
WAH7706
Software vendor:
ZyXEL Communications Corp.
ZyXEL Communications Corp.
Description
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error when processing authentication requests. A remote attacker can bypass authentication process by accessing certain GCI scripts directly and gain unauthorized access to the system.
Remediation
Install updates from vendor's website.