CVE-2025-30034 is a security vulnerability identified in Siemens SIMATIC RTLS Locating Manager versions prior to 3.3. The vulnerability is classified under CWE-617, which refers to Reachable Assertion issues. Specifically, the affected software does not properly validate input received on its listening port bound to the local loopback interface. This improper input validation can be exploited by an unauthenticated local attacker to trigger an assertion failure, leading to a denial of service (DoS) condition. The vulnerability requires local access since the listening port is on the loopback interface, meaning remote exploitation is not feasible without prior local compromise. The CVSS v3.1 base score is 6.2, indicating a medium severity level. The vector string (AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) confirms that the attack vector is local, attack complexity is low, no privileges or user interaction are required, and the impact is limited to availability (denial of service), with no confidentiality or integrity impact. No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability could disrupt the operation of the SIMATIC RTLS Locating Manager, which is used for real-time locating systems in industrial environments, potentially affecting asset tracking and operational workflows dependent on this system.

For European organizations, especially those in industrial automation, manufacturing, logistics, and critical infrastructure sectors using Siemens SIMATIC RTLS Locating Manager, this vulnerability poses a risk of service disruption. The denial of service could interrupt real-time location tracking of assets, personnel, or equipment, leading to operational inefficiencies, safety risks, and potential financial losses. Since the vulnerability requires local access, the threat is primarily from insider threats or attackers who have already gained initial foothold within the network. However, the disruption of availability in industrial environments can have cascading effects, including delayed production, impaired safety monitoring, and reduced situational awareness. Organizations relying on RTLS for compliance or safety-critical functions may face regulatory and operational challenges if the system becomes unavailable. Although there is no direct confidentiality or integrity impact, the availability impact alone can be significant in time-sensitive industrial contexts.

To mitigate this vulnerability, European organizations should: 1) Restrict local access to systems running SIMATIC RTLS Locating Manager by enforcing strict access controls and network segmentation to limit who can connect to the loopback interface. 2) Monitor and audit local user activities to detect any unauthorized attempts to interact with the vulnerable service. 3) Apply Siemens updates or patches as soon as they become available, even though no patch links are currently provided, maintaining close contact with Siemens support channels. 4) Implement host-based intrusion detection systems (HIDS) to detect anomalous local traffic or assertion failures related to the RTLS service. 5) Employ application whitelisting and endpoint protection to prevent unauthorized code execution or exploitation attempts. 6) Consider temporary compensating controls such as disabling or isolating the RTLS Locating Manager service if feasible, until a patch is applied. 7) Conduct internal security awareness training focusing on the risks of local privilege escalation and insider threats to reduce the likelihood of exploitation.