The vulnerability identified as CVE-2025-15114 affects Ksenia Security Lares 4.0 Home Automation versions 1.6 and 1.0.0.15. It is classified as a file descriptor leak where the alarm system's PIN is exposed in the 'basisInfo' XML file returned by the server after authentication. Critically, the vulnerability does not require any authentication or user interaction to exploit, as the PIN is included in the server response accessible over the network. This exposure allows an attacker to retrieve the alarm PIN and subsequently bypass security measures to disable the alarm system, compromising the system's confidentiality, integrity, and availability. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N) indicates that the attack can be performed remotely over the network with low complexity and no privileges or user interaction, and it causes high impact on all security objectives. Although no public exploits have been reported yet, the critical nature of the flaw and the sensitive nature of alarm systems make it a significant threat. The vulnerability stems from improper handling of sensitive information in server responses, specifically the inclusion of the alarm PIN in an XML file that should not expose such data. This flaw can be leveraged by attackers to disable alarms, potentially facilitating unauthorized physical access or other malicious activities. The affected product is used in home automation environments, which may also be integrated into broader building security systems, increasing the potential impact. The lack of available patches at the time of publication necessitates immediate risk mitigation through network segmentation, access control, and monitoring.

For European organizations, this vulnerability poses a severe risk to physical security and safety, especially for residential and commercial buildings using Ksenia Security Lares 4.0 systems. Attackers exploiting this flaw can disable alarm systems remotely without authentication, enabling unauthorized entry, theft, or sabotage. The compromise of alarm integrity undermines trust in home automation security products and could lead to financial losses, privacy breaches, and potential harm to occupants. Organizations relying on these systems for critical infrastructure protection or sensitive environments face heightened risks. The exposure of the alarm PIN also raises concerns about cascading effects if the same credentials are reused or if the alarm system interfaces with other security controls. Given the network-based nature of the attack, any connected device or network segment that can reach the vulnerable system is at risk, emphasizing the need for robust network security. The absence of known exploits currently provides a window for proactive defense, but the critical severity score indicates that exploitation would have devastating consequences.

1. Immediately restrict network access to Ksenia Security Lares 4.0 devices by implementing strict firewall rules and network segmentation to isolate these systems from untrusted networks and the internet. 2. Monitor network traffic for any requests to the 'basisInfo' XML file or unusual access patterns that could indicate attempts to retrieve the alarm PIN. 3. Enforce strong authentication and authorization controls on all interfaces interacting with the home automation system, even if the vulnerability itself does not require authentication. 4. Coordinate with Ksenia Security S.p.A. for timely patch deployment once available; prioritize updating affected devices to versions that address this vulnerability. 5. Conduct security audits and penetration testing focused on home automation systems to identify and remediate similar information exposure issues. 6. Educate users and administrators about the risks of this vulnerability and encourage vigilance against suspicious activity around alarm systems. 7. Consider deploying additional physical security measures as compensating controls until the vulnerability is fully remediated. 8. Implement logging and alerting mechanisms to detect and respond rapidly to any exploitation attempts.