SB2021030602 - Authentication bypass in several Zyxel LTE routers
Published: March 6, 2021
Security Bulletin ID
SB2021030602
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Authentication (CVE-ID: CVE-2020-28899)
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 update from vendor's website.