Team82 has developed a novel technique called the Evil PLC Attack in which programmable logic controllers (PLCs) are weaponized and used to compromise engineering workstations. An attacker with a foothold on an engineering workstation can have access to anything else on the OT network to which an engineer connects that machine, including other PLCs.
CWE-321 USE OF HARD-CODED CRYPTOGRAPHIC KEY:
An attacker can gain access to salted information to decrypt MQTT information.
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.
CVSS v3: 5.3
CWE-121 STACK-BASED BUFFER OVERFLOW:
When the REST interface is enabled by the user, if an attacker gains access to the control network and exploits CVE-2025-6074, the attacker can use the JSON configuration to overflow the expiration date field.
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.
CVSS v3: 7.5
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.
CVSS v3: 7.5
CWE-321 USE OF HARD-CODED CRYPTOGRAPHIC KEY:
When the REST interface is enabled by the user, and an attacker gains access to the source code and the control network, the attacker can bypass REST interface authentication and gain access to MQTT configuration data.
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.
CVSS v3: 6.5
A lack of SSL certificate validation in BlueStacks v5.20 allows attackers to execute a man-it-the-middle attack and obtain sensitive information.
CVSS v3: 3.9
