CVE-2025-59575 is a vulnerability identified in the Stylemix MasterStudy Learning Management System (LMS), affecting versions up to and including 3.6.20. The flaw involves the exposure of sensitive system information to an unauthorized control sphere, meaning that an attacker with some level of authenticated access (PR:L) but no user interaction (UI:N) can retrieve embedded sensitive data from the system. The vulnerability is remotely exploitable over the network (AV:N) with low attack complexity (AC:L). The scope is changed (S:C), indicating that the vulnerability affects resources beyond the initially vulnerable component, potentially impacting other parts of the system or connected components. The confidentiality impact is low (C:L), while integrity and availability are not affected (I:N, A:N). This suggests that while the attacker can gain access to sensitive information, they cannot modify data or disrupt service availability. The vulnerability could allow attackers to gather information useful for further exploitation or reconnaissance within the LMS environment. No public exploits are currently known, and no patches have been linked yet, indicating that remediation may still be pending. The vulnerability was reserved in September 2025 and published in October 2025, reflecting recent discovery and disclosure.

For European organizations, especially educational institutions and enterprises using Stylemix MasterStudy LMS, this vulnerability poses a risk of sensitive information leakage. The exposed data could include configuration details, system paths, or other embedded secrets that attackers could leverage to escalate privileges or conduct targeted attacks. Although the vulnerability does not directly affect system integrity or availability, the confidentiality breach can undermine trust in the LMS platform and potentially expose user data indirectly. Organizations relying heavily on e-learning platforms for training or education may face operational risks if attackers use the leaked information to compromise accounts or deploy further attacks. The medium severity indicates a moderate risk level, but the impact could be more significant in environments where the LMS is integrated with other critical systems or contains sensitive educational or personal data. The lack of known exploits reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits once details become widely known.

Organizations should implement strict access controls to the MasterStudy LMS administrative and user interfaces, ensuring that only authorized personnel have authenticated access, as exploitation requires some level of privilege. Network segmentation and firewall rules should limit exposure of the LMS to trusted networks and users. Monitoring and logging access to sensitive LMS components can help detect suspicious activities indicative of exploitation attempts. Since no official patch is currently linked, organizations should stay alert for vendor updates or security advisories from Stylemix and apply patches promptly once available. Additionally, conducting regular security assessments and penetration tests on the LMS environment can help identify and remediate related vulnerabilities. Employing web application firewalls (WAFs) with custom rules to detect anomalous requests targeting sensitive data retrieval endpoints may provide temporary protection. Finally, educating LMS administrators about this vulnerability and safe operational practices will reduce the risk of inadvertent exposure.