CVE-2025-64214 identifies a missing authorization vulnerability in the StylemixThemes MasterStudy LMS Pro plugin, affecting all versions prior to 4.7.16. The vulnerability arises because certain functions within the LMS are not properly constrained by Access Control Lists (ACLs), allowing unauthorized users to invoke these functions. This can lead to unauthorized access to sensitive operations or data within the LMS environment. The MasterStudy LMS Pro is a widely used WordPress plugin designed for managing online courses, student data, and educational content. The missing authorization means that an attacker, without proper credentials or elevated privileges, could potentially perform actions reserved for authenticated or privileged users. Although no public exploits are currently known, the vulnerability is significant because it undermines the fundamental security model of the LMS. The lack of a CVSS score indicates that the vulnerability is newly published and not yet fully assessed, but the nature of missing authorization typically implies a high risk. The vulnerability does not require user interaction, increasing the risk of automated or remote exploitation. The absence of patch links suggests that a fix is either pending or recently released, so organizations must monitor vendor communications closely. The issue impacts confidentiality by potentially exposing sensitive educational data, integrity by allowing unauthorized changes, and availability if critical functions are disrupted. The vulnerability is particularly relevant for organizations relying on MasterStudy LMS Pro for critical educational services, including universities, training providers, and corporate learning departments.

For European organizations, this vulnerability poses a significant risk to the confidentiality, integrity, and availability of educational data and services. Unauthorized access could lead to exposure of personal student information, unauthorized course modifications, or disruption of learning activities. This can result in reputational damage, regulatory non-compliance (e.g., GDPR violations due to data exposure), and operational downtime. Given the increasing reliance on e-learning platforms across Europe, especially accelerated by remote learning trends, exploitation could affect a broad user base including students, educators, and administrators. The impact is heightened in sectors where educational data is sensitive or where LMS availability is critical for ongoing training and certification. Additionally, unauthorized access could be leveraged as a foothold for further attacks within an organization’s network. The lack of known exploits currently reduces immediate risk but does not eliminate the potential for future exploitation. Organizations that have not updated to the fixed version remain vulnerable.

1. Immediately verify the version of MasterStudy LMS Pro in use and plan to upgrade to version 4.7.16 or later as soon as the patch is available. 2. Until a patch is applied, restrict access to the LMS administrative and sensitive functionality via network-level controls such as IP whitelisting or VPN access. 3. Implement strict role-based access control (RBAC) within the LMS to minimize the number of users with elevated privileges. 4. Monitor LMS logs for unusual access patterns or unauthorized function calls that could indicate exploitation attempts. 5. Conduct a security review of all LMS-related plugins and integrations to ensure no other missing authorization issues exist. 6. Educate LMS administrators and users about the importance of applying security updates promptly. 7. Consider deploying web application firewalls (WAFs) with custom rules to detect and block unauthorized access attempts targeting the vulnerable functions. 8. Regularly audit user permissions and remove unnecessary accounts or privileges. 9. Coordinate with the vendor for timely updates and security advisories. 10. Prepare an incident response plan specific to LMS compromise scenarios.