As of June 15, 2022, this site no longer supports Internet Explorer. Please use another browser for the best experience on our site.
Sign In
Home Support Security Advisories CVE-2026-111459, CVE-2026-111460, CVE-2026-111461: Vulnerabilities in Moxa Remote Connect Suite (MRC

Product support

Security Advisories

Please sign in

Forgot your password?
Sign In
Remember Me.
Not a member? Sign up now
SUMMARY

CVE-2026-111459, CVE-2026-111460, CVE-2026-111461: Vulnerabilities in Moxa Remote Connect Suite (MRC Client) and OnCell G3150A-LTE Series

This security advisory addresses one vulnerability identified in Moxa Remote Connect Suite (MRC Client) and two vulnerabilities identified in the OnCell G3150A-LTE Series.

 

CVE-2026-111459 - Unauthenticated server-supplied OpenVPN configuration in Moxa Remote Connect Suite (MRC Client)

An improper certificate validation vulnerability exists in Moxa Remote Connect Suite (MRC Client). Under certain conditions, an unauthenticated attacker with on-path access to the communication between the MRC Client and its server could impersonate a trusted server and conduct a man-in-the-middle attack, potentially compromising the confidentiality and integrity of communications.

 

CVE-2026-111460 - Static HTTPS private key and CA private key in firmware in OnCell G3150A-LTE Series

A hard-coded cryptographic key vulnerability exists in the OnCell G3150A-LTE Series. Under certain conditions, an unauthenticated remote attacker could obtain shared cryptographic key material and use it to impersonate affected devices that have not regenerated their cryptographic keys, potentially compromising the confidentiality and integrity of management communications.

 

CVE-2026-111461 - SMS upgrade argument reaches system() unescaped in OnCell G3150A-LTE Series

An OS command injection vulnerability exists in OnCell G3150A-LTE Series. When the SMS management functionality is enabled and configured, a remote attacker with the required privileges could exploit insufficient input validation in the SMS management functionality to execute arbitrary commands on the affected device.

 

Given the high severity of these issues, users should apply the solutions immediately to reduce security risks.

 

The Identified Vulnerability Type and Potential Impact 

CVE ID Vulnerability Type Impact
CVE-2026-111459

CWE-295: Improper Certificate Validation

 CAPEC-94: Adversary in the Middle (AiTM)
CVE-2026-111460 CWE-321: Use of Hard-coded Cryptographic Key CAPEC-37: Retrieves Embedded Sensitive Data
CVE-2026-111461 CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CAPEC-88: OS Command Injection

Vulnerability Scoring Details 

CVE ID
Base Score
Vector
 Severity

Unauthenticated

Remote Exploits
CVE-2026-111459

CVSS 4.0: 7.6

AV:N/AC:L/AT:P/PR:N/UI:P/

VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

 High Yes
CVE-2026-111460 CVSS 4.0: 7.7

AV:N/AC:L/AT:P/PR:N/UI:P/

VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

 High Yes
CVE-2026-111461 CVSS 4.0: 7.5

AV:N/AC:L/AT:P/PR:H/UI:N/

VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

 High No
AFFECTED PRODUCTS AND SOLUTIONS

Solutions

Moxa has developed appropriate solutions to address the vulnerability. The solutions for the affected products are listed in the following table: 

Product Series Affected Versions Solutions
Moxa Remote Connect Suite (MRC Client)

Software

  • v4.2.0 and earlier

(affected by CVE-2026-111459)

Please contact Moxa Technical Support for the security patch

  • v4.2.2

OnCell G3150A-LTE Series

*Note: End of life product

All firmware versions

(affected by CVE-2026-111460 and CVE-2026-111461)

Please refer to the following mitigation measures to reduce the risk of exploitation:

  • For CVE-2026-111460, reset the affected device to regenerate the device certificate and associated cryptographic key material.

  • For CVE-2026-111461, keep the SMS functionality disabled unless it is required for operation. This functionality is disabled by default. If it is not needed, Moxa recommends leaving it disabled to reduce the risk of exploitation.

 

Mitigations

For users who may not be able to perform a firmware update, we provide the following recommended mitigation measures as an alternative to mitigate the risk associated with the vulnerability.

  • Refer to the General Security Recommendations section to further strengthen your security context.

 

General Security Recommendations

To safeguard devices and networks, we recommend implementing the following recommendations to mitigate potential risks:

  1. Restrict Network Access
    • Use firewalls or access control lists (ACLs) to limit communication to trusted IP addresses and networks.
    • Segregate operational networks from other networks (e.g., enterprise networks) using VLANs or physical separation.
  2. Minimize Exposure
    • Avoid exposing devices directly to the Internet.
    • Disable unused network services and ports to reduce the attack surface.
  3. Enhance Device Authentication and Access Control
    • Implement multi-factor authentication (MFA) for accessing critical systems.
    • Use role-based access control (RBAC) to enforce the principle of least privilege.
    • Prohibit the use of weak passwords and enforce a password policy that includes password complexity requirements, periodic password changes, and restrictions on password reuse.
  4. Regularly Update Firmware and Software
    • Keep devices updated with the latest firmware versions and security patches.
    • Establish a regular patch management schedule to address newly identified vulnerabilities.
  5. Secure Remote Access
    • Use encrypted communication protocols (e.g., VPN, SSH) for remote access.
    • Restrict remote access to authorized personnel only and enforce strong authentication mechanisms.
  6. Implement Anomaly Detection Techniques
    • Monitor network traffic and device behavior for unusual or unauthorized activities.
    • Use tools or techniques that can identify anomalies and provide alerts for potential threats.
  7. Implement Logging and Monitoring
    • Enable event logging and maintain audit trails on devices.
    • Regularly review logs for anomalies and unauthorized access attempts.
  8. Conduct Regular Security Assessments
    • Perform vulnerability assessments to identify potential risks.
    • Regularly review device configurations to ensure compliance with security policies.

 

Acknowledgement

We would like to express our gratitude to Abhinav Agarwal for reporting the vulnerability, collaborating with us to enhance the security of our products, and contributing to our efforts to deliver better service to our customers.

 

Revision History:

VERSION DESCRIPTION RELEASE DATE
1.0 First release October 27, 2026

Relevant Products

Moxa Remote Connect Suite · OnCell G3150A-LTE Series ·

  •   Print this page

  • Save
    You can manage and share your saved list in My Moxa
Related Advisories
Let’s get that fixed

If you are concerned about a potential cybersecurity vulnerability, please contact us and one of technical support staff will get in touch with you.

Report a Vulnerability
 
 
Added To Bag

View Bag
You have some items waiting in your bag; click here to finish your quote!

You are currently on the Global / English site.
Would you like to go to the site for your region?

Feedback