CVE-2025-15114 is a critical security vulnerability identified in Ksenia Security Lares 4.0 Home Automation versions 1.6 and 1.0.0.15. The flaw involves an unintended exposure of the alarm system's PIN within the 'basisInfo' XML file returned by the server after authentication. Notably, the vulnerability allows attackers to retrieve this sensitive PIN from the server response without requiring any prior authentication or user interaction, indicating a severe information disclosure issue. The exposed PIN can be used to bypass the alarm system's security mechanisms, enabling attackers to disable alarms and potentially gain unauthorized physical access to protected premises. The vulnerability is remotely exploitable over the network (AV:N), requires no privileges (PR:N), no user interaction (UI:N), and has high impact on confidentiality, integrity, and availability (VC:H/VI:H/VA:H), resulting in a CVSS 4.0 base score of 9.3. Although no known exploits are currently reported in the wild, the ease of exploitation and critical impact make this a high-risk vulnerability. The lack of available patches at the time of disclosure necessitates immediate risk mitigation through network segmentation and access controls. This vulnerability highlights a significant security design flaw in the handling of sensitive information within the home automation system's API responses.

The impact of CVE-2025-15114 on European organizations is substantial, particularly for residential users, small businesses, and facilities relying on Ksenia Security Lares 4.0 for physical security. The exposure of the alarm system PIN compromises the confidentiality of critical security credentials, enabling attackers to bypass alarm systems without detection. This undermines the integrity and availability of physical security controls, potentially leading to unauthorized access, theft, or sabotage. For organizations in Europe, where smart home and building automation adoption is growing, this vulnerability could lead to increased incidents of physical breaches and insurance liabilities. The lack of authentication or user interaction required for exploitation means attackers can remotely target vulnerable devices over the network, increasing the attack surface. Additionally, the critical severity and network accessibility elevate the risk of automated or large-scale attacks, especially in densely populated urban areas with many installations. The reputational damage and operational disruption from compromised alarm systems could be significant for affected organizations.

To mitigate CVE-2025-15114 effectively, European organizations should implement the following specific measures: 1) Immediately restrict network access to Ksenia Security Lares 4.0 devices by placing them behind firewalls or VPNs, limiting exposure to trusted networks only. 2) Monitor network traffic for unusual requests to the 'basisInfo' XML endpoint and implement intrusion detection rules to flag attempts to retrieve the alarm PIN. 3) Disable or restrict remote management interfaces until a vendor patch is available. 4) Employ network segmentation to isolate home automation systems from critical IT infrastructure and sensitive data networks. 5) Regularly audit device configurations and logs for signs of unauthorized access or PIN retrieval attempts. 6) Engage with Ksenia Security S.p.A. for timely updates and apply patches as soon as they are released. 7) Educate users and administrators about the risks of exposing home automation systems to the internet and enforce strong network security policies. 8) Consider deploying additional physical security controls as compensating measures until the vulnerability is remediated.