The vulnerability identified as CVE-2025-15113 affects Ksenia Security Lares 4.0 Home Automation versions 1.6 and 1.0.0.15. It stems from an unprotected endpoint that permits authenticated attackers to upload MPFS File System binary images. MPFS (Microchip File System) is used to store files in embedded devices. By uploading a crafted binary image, an attacker can overwrite the device's flash program memory, which contains the firmware and web server code. This overwriting capability enables arbitrary code execution on the device's web server, effectively allowing the attacker to take control of the home automation system. The vulnerability requires low attack complexity and only low privileges (authentication) but no user interaction. The CVSS 4.0 score of 8.5 reflects the high impact on confidentiality, integrity, and availability, as the attacker can manipulate system firmware and potentially disrupt or spy on home automation functions. Although no known exploits are currently reported in the wild, the vulnerability presents a significant risk due to the critical role of home automation systems in security and convenience. The lack of patch links suggests that a fix may not yet be publicly available, emphasizing the need for immediate mitigation steps.

For European organizations, especially those deploying Ksenia Security Lares 4.0 in residential, commercial, or small office environments, this vulnerability poses a serious threat. Successful exploitation could lead to full compromise of the home automation system, allowing attackers to disable security features, manipulate alarms, or gain persistent access to the network. This undermines physical security and privacy, potentially exposing occupants to theft or surveillance. Additionally, compromised devices could be leveraged as entry points into broader corporate or home networks, increasing the risk of lateral movement and data breaches. The impact is heightened in countries with high adoption of smart home technologies and where Ksenia Security products have significant market penetration. The vulnerability also risks damaging trust in IoT and home automation technologies, which are increasingly integrated into critical infrastructure and daily life across Europe.

1. Immediately restrict access to the vulnerable upload endpoint by implementing strong network segmentation and firewall rules limiting access to trusted users and devices only. 2. Enforce multi-factor authentication (MFA) for all users with access to the home automation system to reduce the risk of credential compromise. 3. Monitor logs and network traffic for unusual or unauthorized attempts to upload MPFS binary images or access the firmware update functionality. 4. Coordinate with Ksenia Security S.p.A. to obtain and apply official patches or firmware updates as soon as they become available. 5. If patches are not yet available, consider disabling or isolating the vulnerable functionality temporarily, or replacing affected devices with more secure alternatives. 6. Conduct regular security assessments and penetration testing focused on IoT and home automation systems to detect similar vulnerabilities early. 7. Educate users and administrators on the risks of firmware tampering and the importance of secure credential management.