CVE-2025-67965 identifies a Missing Authorization vulnerability in the favethemes Homey Core product, affecting versions up to and including 2.4.3. This vulnerability arises from incorrectly configured access control security levels, allowing unauthenticated remote attackers to bypass authorization checks. The flaw permits attackers to access certain data or functionality that should be restricted, though it does not allow modification or disruption of services. The vulnerability is exploitable over the network without requiring any privileges or user interaction, making it relatively easy to exploit. The CVSS v3.1 base score of 5.3 reflects a medium severity level, with confidentiality impact limited to partial data disclosure, no impact on integrity or availability, and no authentication required. No known exploits have been reported in the wild, and no official patches or mitigations have been published at the time of disclosure. The vulnerability affects the core component of the Homey smart home platform, which is used to manage and automate connected devices. Improper access control in such a platform could expose sensitive user data or configuration details to unauthorized parties, potentially leading to privacy concerns or further targeted attacks. The lack of authorization checks indicates a design or implementation flaw in the access control mechanisms within the Homey Core software.

For European organizations, the primary impact of this vulnerability is unauthorized disclosure of sensitive data managed by the Homey Core platform. This could include user preferences, device configurations, or other personal information related to smart home environments. While the vulnerability does not allow modification or disruption, the exposure of confidential data can lead to privacy violations and could be leveraged for further attacks such as social engineering or targeted intrusions. Organizations relying on Homey Core for smart home automation in offices, residential buildings, or critical infrastructure may face increased risk of data leakage. The ease of exploitation without authentication increases the threat level, especially in environments where the Homey Core interface is exposed to untrusted networks or the internet. The absence of known exploits reduces immediate risk but does not eliminate the potential for future attacks. Overall, the vulnerability could undermine trust in smart home deployments and complicate compliance with European data protection regulations such as GDPR if personal data is exposed.

Until an official patch is released, European organizations should implement network-level access controls to restrict access to the Homey Core management interfaces, ensuring they are not exposed to untrusted networks or the internet. Employ network segmentation to isolate smart home management systems from critical business networks. Enable and monitor logging on Homey Core devices to detect unauthorized access attempts. Review and tighten firewall rules and VPN configurations to limit remote access. Conduct regular audits of device configurations and user permissions within the Homey platform. Engage with the vendor favethemes for updates and apply patches promptly once available. Consider deploying intrusion detection/prevention systems (IDS/IPS) tuned to detect anomalous access patterns targeting Homey Core. Educate users and administrators about the risks of exposing smart home management interfaces and enforce strong authentication where possible. Finally, maintain an inventory of all Homey Core deployments to ensure comprehensive coverage of mitigation efforts.