CVE-2024-28026 is an authenticated OS command injection vulnerability identified in MC Technologies MC LR Router version 2.10.5, specifically within the web interface's I/O configuration functionality. The vulnerability stems from improper neutralization of special elements (CWE-78) in the 'out1' parameter, which is processed by the router's web server. The vulnerable code uses sscanf to parse the parameter key and then constructs a command string using asprintf that includes user-controlled input. This command string is passed directly to the system() call without sanitization, allowing an attacker to execute arbitrary OS commands. Exploitation requires authentication but no user interaction beyond sending a crafted HTTP request. The CVSS 3.1 base score is 7.2, reflecting network attack vector, low attack complexity, high privileges required, and no user interaction. The impact includes full compromise of the router’s confidentiality, integrity, and availability, potentially allowing attackers to manipulate network traffic, disrupt services, or pivot into internal networks. No public exploits are currently known, but the vulnerability is critical due to the nature of command injection and the router’s role in network infrastructure.

For European organizations, this vulnerability poses a significant risk, especially for those relying on MC Technologies MC LR Router in industrial, manufacturing, or critical infrastructure environments. Successful exploitation could lead to unauthorized command execution, enabling attackers to disrupt network operations, intercept or manipulate sensitive data, and potentially launch further attacks within the internal network. The compromise of routers can undermine the security perimeter, leading to broader organizational impacts including data breaches, operational downtime, and reputational damage. Given the router’s role in managing I/O configurations, attackers might also manipulate connected devices or systems, amplifying the impact. The requirement for authentication limits exposure somewhat but does not eliminate risk, as credential theft or insider threats could facilitate exploitation. The absence of known public exploits provides a window for proactive mitigation before widespread attacks occur.

1. Immediately assess and inventory all MC Technologies MC LR Router devices running version 2.10.5 within the network. 2. Apply vendor patches or firmware updates as soon as they become available; monitor MC Technologies advisories closely. 3. If patches are not yet available, disable or restrict access to the vulnerable web interface I/O configuration functionality, especially the 'out1' parameter processing. 4. Enforce strong authentication mechanisms and rotate credentials regularly to reduce risk of credential compromise. 5. Implement network segmentation to isolate routers from critical internal systems and limit administrative access to trusted hosts only. 6. Employ web application firewalls or intrusion detection systems with custom rules to detect and block suspicious HTTP requests targeting the vulnerable parameters. 7. Conduct regular security audits and penetration testing focusing on router configurations and access controls. 8. Educate administrators on the risks of command injection and the importance of secure configuration management.