Headline

CVE-2021-4039: Zyxel security advisory for OS command injection vulnerability of NWA1100-NH access point

A command injection vulnerability in the web interface of the Zyxel NWA-1100-NH firmware could allow an attacker to execute arbitrary OS commands on the device.

3 years ago

CVE

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

CVE: CVE-2021-4039

Summary

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.

Got a question?

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

Acknowledgment

Thanks to Ahmed Alroky for reporting the issue to us.

Revision history

2022-03-01: Initial release