CVE-2025-5220 is a buffer overflow vulnerability identified in FreeFloat FTP Server version 1.0.0, specifically within the GET Command Handler component. This vulnerability arises due to improper handling of input data in the GET command, allowing an attacker to send crafted requests that overflow the buffer allocated for processing this command. The overflow can corrupt adjacent memory, potentially enabling arbitrary code execution or causing a denial of service. The vulnerability is remotely exploitable without requiring authentication or user interaction, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). Although the CVSS score is 6.9 (medium severity), the nature of buffer overflows typically presents significant risks, especially if exploited to execute arbitrary code. No patches or fixes have been published yet, and no known exploits are reported in the wild at this time. However, the public disclosure of the vulnerability increases the risk of exploitation attempts. The vulnerability affects only version 1.0.0 of the FreeFloat FTP Server, which is a specialized FTP server product. The lack of authentication requirement and the remote attack vector make this vulnerability particularly concerning for exposed FTP servers running this version, as attackers can potentially compromise the server or disrupt its availability remotely.

For European organizations using FreeFloat FTP Server 1.0.0, this vulnerability poses a risk of unauthorized remote code execution or denial of service, which could lead to data breaches, service outages, or further network compromise. FTP servers often handle sensitive file transfers, so exploitation could result in exposure or manipulation of confidential data. The medium CVSS score reflects some limitations in impact scope or exploit complexity, but the absence of authentication and user interaction requirements means attackers can attempt exploitation at scale. Organizations relying on this FTP server for critical file transfer operations may face operational disruptions and reputational damage if exploited. Additionally, compromised FTP servers could serve as footholds for lateral movement within corporate networks. Given the public disclosure and lack of patches, European entities should consider the vulnerability a significant operational risk until mitigated.

1. Immediate mitigation should include isolating or disabling the FreeFloat FTP Server 1.0.0 instances until a patch is available. 2. Restrict network exposure of the FTP server by limiting access via firewall rules to trusted IP addresses only, reducing the attack surface. 3. Monitor network traffic for unusual GET command requests or anomalous FTP activity that could indicate exploitation attempts. 4. Employ intrusion detection/prevention systems (IDS/IPS) with signatures or heuristics capable of detecting buffer overflow attempts targeting FTP GET commands. 5. If continued use is necessary, consider deploying application-layer proxies or FTP gateways that can sanitize or validate FTP commands before reaching the server. 6. Plan and prioritize upgrading or migrating to a more secure and actively maintained FTP server solution. 7. Maintain comprehensive logging and conduct regular security audits of FTP server usage and configurations. 8. Educate IT staff on this vulnerability to ensure rapid response to any suspicious activity.