CVE-2025-59461 is a vulnerability classified under CWE-862 (Missing Authorization) found in all firmware versions of the SICK AG TLOC100-100 device. The flaw resides in the device's unauthenticated C++ API, which lacks proper authorization checks, enabling a remote attacker to interact with the device without any authentication. This allows the attacker to access or modify sensitive data and disrupt the device's services remotely. The vulnerability is exploitable over the network (Attack Vector: Adjacent Network), requires no privileges or user interaction, and affects confidentiality, integrity, and availability. The CVSS v3.1 score of 7.6 reflects these factors, highlighting a high-severity risk. The device is commonly used in industrial automation environments, where reliable operation and data integrity are critical. No patches or mitigations have been published by the vendor yet, and no known exploits are currently reported. The lack of authorization controls in a critical API exposes the device to potential attacks that could lead to operational downtime, data leakage, or manipulation of industrial processes.

For European organizations, especially those in manufacturing, logistics, and industrial automation sectors, this vulnerability poses significant risks. Exploitation could lead to unauthorized access to sensitive operational data, manipulation of device behavior, and disruption of critical services, potentially causing production halts or safety incidents. Given the widespread use of SICK AG products in Europe, the vulnerability could impact supply chains and industrial control systems, leading to financial losses and reputational damage. The ability to exploit the vulnerability without authentication and user interaction increases the likelihood of attacks, potentially by cybercriminals or nation-state actors targeting industrial infrastructure. The disruption of availability could also affect compliance with regulatory requirements related to operational continuity and data protection under European laws such as NIS2 and GDPR.

Until an official patch is released by SICK AG, European organizations should implement strict network segmentation to isolate TLOC100-100 devices from untrusted networks and limit access to trusted management systems only. Deploy firewall rules to restrict access to the device's API ports and monitor network traffic for unusual activity targeting these devices. Implement intrusion detection/prevention systems (IDS/IPS) with signatures or anomaly detection tailored to the device's communication patterns. Regularly audit device configurations and logs to detect unauthorized access attempts. Where possible, disable or restrict the unauthenticated API access or replace the device with a more secure alternative if operationally feasible. Engage with SICK AG for updates and apply patches immediately upon release. Additionally, incorporate this vulnerability into incident response plans to ensure rapid containment and remediation if exploitation is detected.