CWE
78 77
Advisory Published
Updated

CVE-2021-39279: OS Command Injection

First published: Tue Sep 07 2021(Updated: )

Certain MOXA devices allow Authenticated Command Injection via /forms/web_importTFTP. This affects WAC-2004 1.7, WAC-1001 2.1, WAC-1001-T 2.1, OnCell G3470A-LTE-EU 1.7, OnCell G3470A-LTE-EU-T 1.7, TAP-323-EU-CT-T 1.3, TAP-323-US-CT-T 1.3, TAP-323-JP-CT-T 1.3, WDR-3124A-EU 2.3, WDR-3124A-EU-T 2.3, WDR-3124A-US 2.3, and WDR-3124A-US-T 2.3.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Moxa Wac-2004 Firmware=1.7
Moxa Wac-2004
Moxa Wac-1001 Firmware=2.1
Moxa Wac-1001
Moxa Wac-1001-t Firmware=2.1
Moxa Wac-1001-t
Moxa Oncell G3470a-lte-eu Firmware=1.7
Moxa Oncell G3470a-lte-eu
Moxa Oncell G3470a-lte-eu-t Firmware=1.7
Moxa Oncell G3470a-lte-eu-t
Moxa Tap-323-eu-ct-t Firmware=1.3
Moxa Tap-323-eu-ct-t
Moxa Tap-323-us-ct-t Firmware=1.3
Moxa Tap-323-us-ct-t
Moxa Tap-323-jp-ct-t Firmware=1.3
Moxa Tap-323-jp-ct-t
Moxa Wdr-3124a-eu Firmware=2.3
Moxa Wdr-3124a-eu
Moxa Wdr-3124a-eu-t Firmware=2.3
Moxa Wdr-3124a-eu-t
Moxa Wdr-3124a-us Firmware=2.3
Moxa Wdr-3124a-us
Moxa Wdr-3124a-us-t Firmware=2.3
Moxa Wdr-3124a-us-t

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Frequently Asked Questions

  • What is the severity of CVE-2021-39279?

    CVE-2021-39279 is classified as a medium severity vulnerability due to the potential for authenticated command injection.

  • How do I fix CVE-2021-39279?

    To remediate CVE-2021-39279, you should update your Moxa devices to the latest firmware versions that close this vulnerability.

  • Which Moxa devices are affected by CVE-2021-39279?

    CVE-2021-39279 affects multiple Moxa devices, including WAC-2004, WAC-1001, OnCell G3470A-LTE-EU, TAP-323 models, and WDR-3124A series.

  • What type of vulnerability is CVE-2021-39279?

    CVE-2021-39279 is an authenticated command injection vulnerability that allows attackers to execute commands on affected Moxa devices.

  • Is CVE-2021-39279 exploitable remotely?

    CVE-2021-39279 can be exploited by authenticated users, which means the attacker has to have valid credentials for the Moxa devices.

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