CVE-2024-40089 is a command injection vulnerability identified in the Vilo 5 Mesh WiFi System firmware versions up to 5.16.1.33. The flaw arises from improper sanitization of input in the device name field, which is used in shell commands without adequate validation or escaping. Authenticated remote attackers can exploit this by injecting arbitrary shell commands into the device name, which the system then executes with elevated privileges. This leads to full remote code execution on the device, allowing attackers to compromise the device’s confidentiality, integrity, and availability. The vulnerability is classified under CWE-77 (Improper Neutralization of Special Elements used in a Command). The CVSS v3.1 base score is 9.1, indicating critical severity, with attack vector network (remote), low attack complexity, high privileges required, no user interaction, and scope change. Although no public exploits are currently known, the vulnerability’s characteristics make it a prime target for attackers aiming to pivot within networks or disrupt critical WiFi infrastructure. The lack of available patches at the time of publication increases the urgency for mitigation.

The impact of CVE-2024-40089 is severe for organizations using Vilo 5 Mesh WiFi systems. Successful exploitation allows attackers to execute arbitrary commands remotely with high privileges, potentially leading to full device compromise. This can result in unauthorized access to internal networks, interception or manipulation of network traffic, disruption of WiFi services, and use of compromised devices as footholds for lateral movement or persistent access. The integrity of network configurations and data can be undermined, and availability of WiFi services can be disrupted, impacting business operations and user productivity. Given the critical role of mesh WiFi systems in modern enterprise and home networks, this vulnerability poses a significant risk to confidentiality, integrity, and availability of network communications. Organizations in sectors relying heavily on wireless connectivity, such as healthcare, education, and critical infrastructure, face heightened risks.

To mitigate CVE-2024-40089, organizations should immediately restrict administrative access to Vilo 5 Mesh WiFi devices to trusted networks and users, employing network segmentation and strong authentication controls. Monitor device logs and network traffic for unusual activity indicative of command injection attempts. Disable or limit remote management features if not essential. Since no patches are currently available, consider deploying compensating controls such as application-layer firewalls or intrusion prevention systems that can detect and block suspicious command injection patterns. Regularly check for firmware updates from the vendor and apply them promptly once released. Conduct thorough audits of device configurations and access controls to minimize exposure. Additionally, educate administrators on the risks of command injection and the importance of input validation in device management interfaces.