Vulnerability identifier: #VU51246

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-28899

CWE-ID: CWE-287

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
LTE4506-M606
Hardware solutions / Routers for home users
LTE7460-M608
Hardware solutions / Routers for home users
WAH7706
Hardware solutions / Routers for home users

Vendor:

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://www.zyxel.com/support/Zyxel-security-advisory-for-CGI-vulnerability-of-LTE.shtml

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.