SB2021112402 - Credentials management in Zyxel routers
Published: November 24, 2021
Security Bulletin ID
SB2021112402
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Credentials management (CVE-ID: CVE-2021-35033)
CWE-ID: CWE-255 - Credentials Management
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user can compromise the target system.
The vulnerability exists due to improper password management. A local user can dismantle and take the device, connect to it using a USB-to-UART cable and gain root access.
Remediation
Install update from vendor's website.