High Threat

CWE-121 STACK-BASED BUFFER OVERFLOW:

When the REST interface is enabled by the user, if an attacker gains access to the control network, user/password broker authentication is enabled, and CVE-2025-6074 is exploited, the attacker can overflow the buffer for the username or password.

ABB recommends disabling the REST interface when it is not being used to configure the MQTT functionality. By default, when the REST interface is disabled so there is no risk. The RMC-100 is not intended for access over public networks such as the Internet. An attacker would need access to the user's private control network to exploit these vulnerabilities. Proper network segmentation is recommended.