CVE-2024-51364 is an arbitrary file upload vulnerability identified in ModbusMechanic version 3.0, a tool likely used for industrial control system (ICS) or SCADA-related operations involving the Modbus protocol. The vulnerability allows an attacker with limited privileges (PR:L) to upload a specially crafted .xml file to the system, which can then be executed to run arbitrary code. The attack vector is network-based (AV:N), requiring no user interaction (UI:N), and the scope is unchanged (S:U). The vulnerability is classified under CWE-434, which pertains to unrestricted file upload flaws that can lead to remote code execution. The CVSS v3.1 base score is 8.8, indicating a high severity due to the potential for full compromise of confidentiality, integrity, and availability (C:H/I:H/A:H). No patches or fixes have been published yet, and no known exploits are reported in the wild, but the vulnerability presents a significant risk given the critical nature of systems typically using ModbusMechanic. Attackers exploiting this flaw could gain control over affected systems, potentially disrupting industrial processes or causing data breaches.

The impact of CVE-2024-51364 is severe for organizations using ModbusMechanic in industrial or critical infrastructure environments. Successful exploitation can lead to full system compromise, allowing attackers to execute arbitrary code, which could disrupt operational technology (OT) processes, cause downtime, manipulate data, or facilitate further lateral movement within networks. This threatens the confidentiality of sensitive operational data, the integrity of control commands, and the availability of critical services. Given the role of ModbusMechanic in managing Modbus protocol communications, exploitation could have cascading effects on industrial control systems, potentially leading to physical damage or safety hazards. The lack of available patches increases exposure, making timely mitigation essential to prevent potential attacks.

Until an official patch is released, organizations should implement strict access controls to limit who can upload files to ModbusMechanic, ideally restricting this capability to trusted administrators only. Network segmentation should be enforced to isolate ModbusMechanic systems from general IT networks and the internet. Employ application-layer filtering or intrusion detection systems to monitor and block suspicious file uploads, especially those involving .xml files. Conduct regular audits of uploaded files and system logs to detect anomalous activity. Disable or restrict file upload functionality if not essential. Prepare for rapid deployment of vendor patches once available by maintaining an up-to-date inventory of affected systems. Additionally, implement robust endpoint protection and continuous monitoring to detect and respond to potential exploitation attempts promptly.