CVE-2025-0193

Stored Cross-site Scripting (XSS) Vulnerability in the MGate 5121/5122/5123 Series

Description

A stored Cross-site Scripting (XSS) vulnerability exists in the MGate 5121/5122/5123 Series firmware version v1.0 because of insufficient sanitization and encoding of user input in the "Login Message" functionality. An authenticated attacker with administrative access can exploit this vulnerability to inject malicious scripts that are continuously stored on the device. These scripts are executed when other users access the login page, potentially resulting in unauthorized actions or other impacts, depending on the user's privileges.

Remediation

Solution:

  • Moxa has developed appropriate solutions to address vulnerability. The solutions for the affected products are listed below. * MGate 5121 Series: Upgrade to the firmware version 2.0 https://www.moxa.com/en/products/industrial-edge-connectivity/protocol-gateways/modbus-tcp-gateways/mgate-5121-series#resources  or later version * MGate 5122 Series: Upgrade to the firmware version 2.0 https://www.moxa.com/en/products/industrial-edge-connectivity/protocol-gateways/ethernet-ip-gateways/mgate-5122-series#resources  or later version * MGate 5123 Series: Upgrade to the firmware version 2.0 https://www.moxa.com/en/products/industrial-edge-connectivity/protocol-gateways/profinet-gateways/mgate-5123-series#resources  or later version

Workaround:

  • * Minimize network exposure to ensure the device is not accessible from the Internet. * Ensure that administrator accounts use strong, unique passwords, and restrict access to trusted personnel only.

Category

5.2
CVSS
Severity: Medium
CVSS 4.0 •
EPSS 0.08%
Vendor Advisory moxa.com
Affected: Moxa MGate 5121 Series
Affected: Moxa MGate 5122 Series
Affected: Moxa MGate 5123 Series
Published at:
Updated at:

References

Link Tags
https://www.moxa.com/en/support/product-support/security-advisory/mpsa-247733-cve-2025-0193-stored-cross-site-scripting-(xss)-vulnerability-in-the-mgate-5121-5122-5123-series vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-0193?
CVE-2025-0193 has been scored as a medium severity vulnerability.
How to fix CVE-2025-0193?
To fix CVE-2025-0193: Moxa has developed appropriate solutions to address vulnerability. The solutions for the affected products are listed below. * MGate 5121 Series: Upgrade to the firmware version 2.0 https://www.moxa.com/en/products/industrial-edge-connectivity/protocol-gateways/modbus-tcp-gateways/mgate-5121-series#resources  or later version * MGate 5122 Series: Upgrade to the firmware version 2.0 https://www.moxa.com/en/products/industrial-edge-connectivity/protocol-gateways/ethernet-ip-gateways/mgate-5122-series#resources  or later version * MGate 5123 Series: Upgrade to the firmware version 2.0 https://www.moxa.com/en/products/industrial-edge-connectivity/protocol-gateways/profinet-gateways/mgate-5123-series#resources  or later version
Is CVE-2025-0193 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-0193 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-0193?
CVE-2025-0193 affects Moxa MGate 5121 Series, Moxa MGate 5122 Series, Moxa MGate 5123 Series.
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