CVE-2025-7769 is a high-severity command injection vulnerability affecting Tigo Energy's Cloud Connect Advanced (CCA) product. The vulnerability exists in the /cgi-bin/mobile_api endpoint, specifically when processing the DEVICE_PING command. Due to improper neutralization of special elements in user-supplied input (classified under CWE-77), an attacker can inject arbitrary commands that the system executes. This flaw allows remote code execution (RCE) without requiring user interaction or elevated privileges beyond low-level privileges, and no authentication is needed if default credentials are in use. The vulnerability arises because the input to the DEVICE_PING command is not properly sanitized, enabling attackers to append malicious shell commands. Exploiting this vulnerability could lead to unauthorized access to the device, disruption of service, and potential exposure or manipulation of sensitive data. Although no public exploits are currently known, the CVSS 4.0 base score of 8.7 reflects the ease of exploitation (network vector, low attack complexity, no privileges or user interaction required) combined with high impact on confidentiality, integrity, and availability. The vulnerability affects version 0 of the product, which likely corresponds to initial or early releases. The lack of available patches at the time of publication increases the urgency for mitigation. Given that Tigo Energy's CCA is used in energy management and monitoring systems, the vulnerability poses a significant risk to operational technology environments, potentially impacting critical infrastructure components that rely on these devices for solar energy system monitoring and control.

For European organizations, especially those involved in renewable energy production, grid management, or energy monitoring, this vulnerability poses a substantial risk. Exploitation could lead to unauthorized control over energy management devices, causing service disruptions or manipulation of energy data, which can affect operational decisions and grid stability. Confidentiality breaches could expose sensitive operational data or user information. Integrity violations might allow attackers to falsify energy readings or device status, undermining trust and potentially causing financial or regulatory consequences. Availability impacts could disrupt energy services, leading to downtime or degraded performance. Given Europe's strong emphasis on renewable energy and smart grid technologies, organizations using Tigo Energy's CCA devices are at risk of targeted attacks aiming to disrupt energy infrastructure or gain footholds in critical systems. The vulnerability's ease of exploitation and lack of required user interaction make it attractive for attackers seeking to compromise energy sector assets remotely.

Immediate mitigation steps include changing default credentials on all affected devices to strong, unique passwords to prevent unauthorized access. Network segmentation should be enforced to isolate CCA devices from general IT networks and limit exposure to untrusted networks. Implement strict firewall rules to restrict access to the /cgi-bin/mobile_api endpoint, allowing only trusted management systems. Monitoring and logging of device access and command execution should be enhanced to detect anomalous activities indicative of exploitation attempts. Until a vendor patch is released, consider disabling or restricting the DEVICE_PING command if feasible. Organizations should engage with Tigo Energy for updates on patches or firmware upgrades addressing this vulnerability. Additionally, conducting regular vulnerability assessments and penetration tests on energy management infrastructure can help identify and remediate similar issues proactively.