CVE-2025-65784 identifies a vulnerability in Hubert Imoveis e Administracao Ltda Hub version 2.0 1.27.3, a software platform likely used for real estate or property management. The vulnerability arises from insecure permissions in the API, allowing attackers who have authenticated with low-level privileges to craft API requests that access other users' sensitive information. This is categorized under CWE-918, indicating improper access control mechanisms. The CVSS 3.1 base score is 6.5 (medium), with an attack vector of network (AV:N), low attack complexity (AC:L), requiring privileges (PR:L), no user interaction (UI:N), unchanged scope (S:U), high confidentiality impact (C:H), no integrity impact (I:N), and no availability impact (A:N). This means an attacker with legitimate low-level credentials can exploit the vulnerability remotely without needing further user interaction. The primary risk is unauthorized disclosure of confidential user data, which could include personal or financial information managed by the platform. No known public exploits or patches are currently available, indicating the need for proactive mitigation. The vulnerability's presence in a niche but critical sector software suggests targeted attacks could be impactful, especially if attackers escalate privileges or leverage the data for further attacks.

For European organizations, particularly those in real estate, property management, or related sectors using Hubert Imoveis e Administracao Ltda Hub or similar platforms, this vulnerability poses a significant confidentiality risk. Unauthorized access to user data could lead to privacy violations under GDPR, resulting in regulatory penalties and reputational damage. The exposure of sensitive client information could facilitate identity theft, fraud, or targeted phishing campaigns. Although the vulnerability does not affect system integrity or availability, the breach of confidentiality alone can have severe business and legal consequences. Organizations relying on this software may face operational disruptions if trust is eroded or if they must undertake emergency incident response. Additionally, the lack of available patches increases the window of exposure, necessitating immediate compensating controls. The medium severity reflects a moderate but tangible threat that should be addressed promptly to avoid escalation or lateral movement by attackers.

Organizations should immediately audit and tighten API access controls within Hubert Imoveis e Administracao Ltda Hub, ensuring that permission checks strictly enforce user data boundaries. Implement role-based access control (RBAC) or attribute-based access control (ABAC) to limit data exposure to authorized users only. Monitor API logs for unusual access patterns or requests that attempt to access other users' data. Employ network segmentation and limit access to the application backend to trusted networks or VPNs. If possible, disable or restrict API endpoints that are not essential. Engage with the vendor for updates or patches and apply them promptly once available. Conduct regular security assessments and penetration testing focused on access control mechanisms. Educate users about the importance of safeguarding their credentials to prevent unauthorized access. Finally, prepare an incident response plan tailored to data breaches involving this platform to minimize impact if exploitation occurs.