Zyxel security advisory for OS command injection vulnerability of NWA1100-NH access point

CVE: CVE-2021-4039



Zyxel has released a patch addressing an OS command injection vulnerability in the NWA1100-NH access point. Users are advised to install it for optimal protection.


What are the vulnerabilities?

An OS command-injection vulnerability in the NWA1100-NH access point could allow an attacker to execute arbitrary OS commands via the web interface of the vulnerable device.


What versions are vulnerable—and what should you do?

After a thorough investigation, we’ve identified only one vulnerable product and released a firmware patch to address the issue, as shown in the table below.

Affected model Patch availability
NWA1100-NH 2.12(AASI.3)C0

Got a question?

Please contact your local service rep or visit Zyxel’s forum for further information or assistance.



Thanks to Ahmed Alroky for reporting the issue to us.


Revision history

2022-03-01: Initial release