CVE-2025-6079 is a critical vulnerability identified in the dasinfomedia School Management System plugin for WordPress, affecting all versions up to and including 93.2.0. The vulnerability stems from improper validation of uploaded file types in the homework.php component of the plugin. Specifically, the plugin fails to restrict the types of files that authenticated users with Student-level access or higher can upload. This lack of validation allows attackers to upload arbitrary files, including potentially malicious scripts or executables, to the web server hosting the WordPress site. Once uploaded, these files could be executed remotely, leading to remote code execution (RCE). The vulnerability is classified under CWE-434, which relates to unrestricted file upload vulnerabilities that can lead to severe security breaches. The CVSS v3.1 base score is 8.8, reflecting high severity due to network attack vector, low attack complexity, privileges required at a low level, no user interaction needed, and high impact on confidentiality, integrity, and availability. While no known exploits have been reported in the wild as of the publication date, the vulnerability poses a significant risk to affected installations, especially given the widespread use of WordPress and the plugin in educational environments. The vulnerability allows attackers to execute arbitrary code on the server, potentially leading to full system compromise, data theft, defacement, or use of the server as a pivot point for further attacks within the network.

For European organizations, particularly educational institutions using the dasinfomedia School Management System plugin on WordPress, this vulnerability presents a substantial threat. Exploitation could lead to unauthorized access to sensitive student and staff data, disruption of educational services, and potential compliance violations under GDPR due to data breaches. The ability to execute arbitrary code remotely could allow attackers to implant malware, ransomware, or backdoors, severely impacting the confidentiality, integrity, and availability of the affected systems. Given the critical role of school management systems in daily operations, any compromise could disrupt academic schedules, communication, and administrative functions. Additionally, compromised systems could be leveraged to attack other connected infrastructure within the organization or used as part of broader cyber-espionage or sabotage campaigns targeting European educational sectors. The high severity score underscores the urgency for European organizations to address this vulnerability promptly to avoid operational, reputational, and regulatory consequences.

To mitigate this vulnerability effectively, European organizations should take the following specific actions: 1) Immediately update the dasinfomedia School Management System plugin to a patched version once available. Since no patch links are currently provided, organizations should monitor vendor advisories closely. 2) In the interim, restrict or disable file upload functionality for users with Student-level access or implement strict access controls to limit upload capabilities only to trusted users. 3) Employ web application firewalls (WAFs) with custom rules to detect and block suspicious file upload attempts, particularly those involving executable or script file extensions. 4) Implement server-side validation and sanitization of uploaded files, including MIME type verification and file content inspection, to prevent execution of malicious payloads. 5) Conduct regular security audits and penetration testing focused on file upload mechanisms to identify and remediate similar issues proactively. 6) Monitor logs for unusual file upload activity or execution attempts and establish incident response procedures to quickly contain potential breaches. 7) Educate users about the risks associated with file uploads and enforce strong authentication and authorization policies to minimize the risk of privilege abuse. These measures, combined with timely patching, will significantly reduce the risk posed by this vulnerability.