#VU123171 OS Command Injection in ZyXEL Communications Corp. products - CVE-2026-1459
Published: February 24, 2026
Vulnerability identifier: #VU123171
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-1459
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
DX5401-B1
VMG3625-T50C
EMG3525-T50B
EMG5523-T50B
VMG3625-T50B
DX5401-B1
VMG3625-T50C
EMG3525-T50B
EMG5523-T50B
VMG3625-T50B
Software vendor:
ZyXEL Communications Corp.
ZyXEL Communications Corp.
Description
The vulnerability allows a remote user to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation in the TR-369 certificate download CGI program. A remote administrator can pass specially crafted data to the application and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.