CVE-2025-67965 identifies a Missing Authorization vulnerability in the favethemes Homey Core product, specifically affecting versions up to and including 2.4.3. The vulnerability arises from incorrectly configured access control security levels, which means that certain operations or resources within the Homey Core system can be accessed or manipulated without proper authorization checks. This type of flaw typically allows attackers to perform unauthorized actions such as viewing, modifying, or deleting data, or altering system configurations. The vulnerability does not require user authentication, increasing the risk of exploitation by remote attackers. Although no public exploits have been reported yet, the lack of authorization controls presents a critical security gap. Homey Core is a platform used for smart home automation, and unauthorized access could lead to control over connected devices, data leakage, or disruption of services. The absence of a CVSS score suggests that the vulnerability is newly disclosed and pending further analysis. The vulnerability was reserved and published in December 2025, indicating recent discovery. The technical details confirm the issue is related to access control misconfiguration rather than a code execution or memory corruption flaw. Organizations using Homey Core should be aware of this vulnerability and monitor for patches or updates from favethemes. Until a patch is available, mitigating controls such as network segmentation and strict firewall rules are recommended to limit exposure.

For European organizations, the impact of CVE-2025-67965 can be significant, especially for those relying on Homey Core for smart home or building automation. Unauthorized access could lead to compromise of sensitive personal or operational data, manipulation of connected devices, and potential disruption of automated processes. This could affect privacy compliance under GDPR if personal data is exposed. Industrial or commercial deployments using Homey Core could face operational downtime or safety risks if attackers manipulate device controls. The vulnerability's ease of exploitation without authentication increases the risk of widespread attacks, particularly in environments where Homey Core is exposed to untrusted networks. The lack of known exploits currently limits immediate risk, but the potential for rapid weaponization exists once exploit code is developed. European organizations with IoT or smart building infrastructure should consider this vulnerability a high priority due to the critical role such systems play in daily operations and security.

1. Immediately restrict network access to Homey Core management interfaces using firewalls or network segmentation to limit exposure to trusted networks only. 2. Implement strict access control policies at the network perimeter and within internal networks to prevent unauthorized access attempts. 3. Monitor network traffic and system logs for unusual access patterns or attempts to exploit access control weaknesses. 4. Engage with favethemes support channels to obtain patches or updates addressing this vulnerability as soon as they become available. 5. Until patches are released, consider disabling non-essential services or features within Homey Core that could be exploited via missing authorization. 6. Conduct a thorough review of all access control configurations within Homey Core deployments to identify and remediate any misconfigurations. 7. Educate IT and security teams about the vulnerability and ensure incident response plans include scenarios involving unauthorized access to smart home automation systems. 8. For organizations with multiple Homey Core deployments, prioritize remediation based on exposure and criticality of the systems involved.