CVE-2025-66410 is a path traversal vulnerability identified in the flipped-aurora gin-vue-admin backstage management system, specifically affecting versions 2.8.6 and earlier. The vulnerability arises due to improper validation and limitation of the 'FileMd5' parameter, which attackers can manipulate to traverse directories and delete arbitrary files or folders on the server. This flaw violates secure coding practices by failing to restrict pathname inputs to a safe directory scope, classified under CWE-22. Exploitation requires no authentication, user interaction, or privileges, and can be performed remotely over the network. The vulnerability has a CVSS 4.0 score of 8.7 (high severity), reflecting its ease of exploitation (attack vector: network, attack complexity: low) and the high impact on integrity and availability, as attackers can delete critical files causing server damage or downtime. No patches are currently linked, and no known exploits have been reported in the wild as of the publication date. The affected product, gin-vue-admin, is a popular Vue and Gin-based backend management system used in various organizational IT infrastructures for administrative tasks. The ability to delete arbitrary files can lead to denial of service, data loss, and potential further compromise if critical system or application files are removed.

For European organizations using gin-vue-admin versions 2.8.6 or earlier, this vulnerability poses a significant risk of operational disruption due to potential deletion of critical files or folders on backend servers. This can result in denial of service, loss of administrative control, and potential data loss. Organizations in sectors relying heavily on backend management systems—such as finance, healthcare, government, and critical infrastructure—may face increased risk of downtime and reputational damage. The lack of authentication requirement means any external attacker scanning for vulnerable instances could exploit this flaw, increasing the threat surface. Additionally, the deletion of files could be leveraged as a stepping stone for further attacks or to cover tracks after other intrusions. The impact on confidentiality is limited, but integrity and availability are severely affected. Given the widespread use of Vue and Gin frameworks in Europe, the vulnerability could affect a broad range of organizations if not mitigated promptly.

1. Immediate upgrade to a fixed version of gin-vue-admin once available; monitor vendor announcements for patches. 2. In the absence of a patch, implement strict input validation and sanitization on the 'FileMd5' parameter to prevent directory traversal sequences (e.g., '..', absolute paths). 3. Employ web application firewalls (WAFs) with custom rules to detect and block suspicious requests attempting path traversal or file deletion operations. 4. Restrict file system permissions for the application user to the minimum necessary, preventing deletion of critical system or application files. 5. Monitor server logs for unusual file deletion requests or errors related to file operations. 6. Conduct regular backups of critical data and configuration files to enable recovery in case of successful exploitation. 7. Network segmentation to limit exposure of backend management interfaces to trusted internal networks or VPNs. 8. Use runtime application self-protection (RASP) tools if available to detect and block malicious input patterns in real time.