CVE-2025-55057 identifies multiple Cross-Site Request Forgery (CSRF) vulnerabilities in Rumpus FTP Server version 9.0.12. CSRF is a web security weakness where an attacker tricks an authenticated user into submitting unintended requests to a web application, causing unauthorized actions. In this case, the vulnerability affects the FTP server's web management interface, allowing an attacker to craft malicious web requests that, when executed by a logged-in user with high privileges, can alter server configurations or execute commands without the user's explicit consent. The CVSS 3.1 base score is 4.5 (medium), reflecting that the attack vector is network-based (AV:N), requires low attack complexity (AC:L), but needs high privileges (PR:H) and user interaction (UI:R). The impact is limited to integrity (I:H) with no confidentiality (C:N) or availability (A:N) impact. No patches are currently published, and no exploits have been observed in the wild. The vulnerability was reserved in August 2025 and published in November 2025. The lack of confidentiality and availability impact reduces the severity, but the ability to manipulate server settings or commands can lead to significant operational risks if exploited. The vulnerability is categorized under CWE-352, a common web security issue. Organizations using Rumpus FTP Server 9.0.12 should monitor for vendor patches and implement interim mitigations to reduce risk.

For European organizations, the primary impact of CVE-2025-55057 lies in the potential unauthorized modification of FTP server configurations or execution of commands, which compromises the integrity of the affected systems. This can lead to unauthorized changes in file access permissions, user management, or server behavior, potentially disrupting business processes or enabling further attacks. Although confidentiality and availability are not directly affected, integrity violations can facilitate lateral movement or data tampering. Organizations relying on Rumpus FTP Server for critical file transfers or internal workflows may experience operational disruptions or compliance issues if the server is manipulated. The requirement for authenticated users with high privileges and user interaction limits the attack surface but does not eliminate risk, especially in environments with many privileged users or weak internal controls. European sectors such as finance, manufacturing, and government agencies using this FTP server could face targeted attacks aiming to alter data flows or exfiltrate sensitive information indirectly. The absence of known exploits currently provides a window for proactive defense, but the medium severity warrants timely attention.

1. Monitor Rumpus vendor communications closely and apply security patches immediately upon release to address CVE-2025-55057. 2. Until patches are available, restrict access to the FTP server's web management interface to trusted networks and users only, using network segmentation and firewall rules. 3. Enforce strong authentication and session management policies to reduce the risk of session hijacking or misuse by privileged users. 4. Implement CSRF protection mechanisms such as anti-CSRF tokens and validate the origin of requests in the web interface if customization is possible. 5. Conduct regular audits of FTP server configurations and logs to detect unauthorized changes promptly. 6. Educate privileged users about the risks of CSRF attacks and encourage cautious behavior when interacting with web interfaces. 7. Consider deploying web application firewalls (WAFs) that can detect and block suspicious CSRF-related traffic patterns. 8. Limit the number of users with high privileges on the FTP server to minimize the attack surface. 9. Use multi-factor authentication (MFA) for administrative access to the FTP server to add an additional security layer. 10. Review and update incident response plans to include scenarios involving FTP server integrity breaches.