Authentication bypass in several Zyxel LTE routers
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-28899 |
| CWE-ID | CWE-287 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
LTE4506-M606 Hardware solutions / Routers for home users LTE7460-M608 Hardware solutions / Routers for home users WAH7706 Hardware solutions / Routers for home users |
| Vendor |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Improper Authentication
EUVDB-ID: #VU51246
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 - Improper Authentication
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsLTE4506-M606: before 1.00 ABDO.6 C0
LTE7460-M608: before 1.00 ABFR.5 C0
WAH7706: before 1.00 ABBC.11 C0
External linkshttp://www.zyxel.com/support/Zyxel-security-advisory-for-CGI-vulnerability-of-LTE.shtml
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.
