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Security Enhancement: SSL/TLS Weak Key Exchange Supported

Published: October 31, 2025

This Alert Is From MOXA

As Industrial IoT (IIoT) adoption continues to proliferate, cybersecurity has become one of the top priorities. The Moxa Product Security Incident Response Team (PSIRT) takes a proactive approach to protect products from cybersecurity vulnerabilities. Moxa PSIRT investigates all reports of vulnerabilities that could potentially affect Moxa products. Moxa created a vulnerability management policy to provide guidance and information to our customers in the event of a reported vulnerability. The management policy ensures that Moxa’s customers have steady, unambiguous resources to help them understand how Moxa resolves or mitigates reported vulnerabilities. For any queries, please email PSIRT@moxa.com.

The device supports SSL/TLS key exchanges that are cryptographically weaker than recommended. Key exchanges must be recommended by IANA and should provide at least 224 bits of security, which translates to a minimum key size of 2048 bits for Diffie Hellman and RSA key exchanges. (Source: Tenable Nessus)

As this issue is assessed as low severity, users may evaluate their environments and decide if updating is required.

 

This alert has come from: https://www.moxa.com/en/support/product-support/security-advisory/mpsa-241045-security-enhancement-ssl-tls-weak-key-exchange-supported