CVE-2025-64270 is a vulnerability identified in the Masteriyo Learning Management System (LMS) affecting versions up to and including 2.0.3. The flaw allows an attacker with limited privileges (PR:L) and network access (AV:N) to retrieve embedded sensitive system information without requiring user interaction (UI:N). The vulnerability does not allow modification or disruption of system operations but compromises confidentiality (C:H) while integrity and availability remain unaffected (I:N, A:N). The exposure of sensitive data could include configuration details, system environment variables, or other embedded secrets that could facilitate further attacks such as privilege escalation or lateral movement within the network. The vulnerability is classified as medium severity with a CVSS score of 6.5, reflecting the moderate impact and the requirement for some level of authentication. No known exploits have been reported in the wild, and no official patches have been linked yet, though the issue is publicly disclosed and tracked by Patchstack. This vulnerability highlights the importance of secure handling of embedded data within LMS platforms, which are critical for educational and corporate training environments.

For European organizations, especially educational institutions, universities, and corporate training providers relying on Masteriyo LMS, this vulnerability could lead to unauthorized disclosure of sensitive system information. Such exposure may facilitate targeted attacks, including privilege escalation or data exfiltration, by providing attackers with valuable reconnaissance data. Confidentiality breaches could undermine trust in the LMS platform and potentially expose personal data or intellectual property indirectly if attackers leverage the disclosed information. While the vulnerability does not directly affect system integrity or availability, the information leakage could be a stepping stone for more severe attacks. Organizations in Europe with stringent data protection regulations like GDPR must consider the compliance implications of such data exposure. The impact is more pronounced in environments where Masteriyo LMS is integrated with other critical systems or contains sensitive educational content and user data.

1. Restrict network access to the Masteriyo LMS to trusted users and IP ranges, minimizing exposure to potential attackers. 2. Enforce strong authentication and role-based access controls to limit the privileges of users accessing the LMS. 3. Monitor LMS logs and network traffic for unusual access patterns or attempts to retrieve sensitive information. 4. Segregate the LMS environment from other critical infrastructure to contain potential breaches. 5. Stay informed on vendor updates and apply security patches promptly once available to address this vulnerability. 6. Conduct regular security assessments and penetration testing focusing on information disclosure risks within the LMS. 7. Educate administrators and users about the risks of information leakage and best practices for secure LMS operation. 8. Consider implementing web application firewalls (WAF) with custom rules to detect and block suspicious requests targeting sensitive data retrieval.