CVE-2025-4792 in FTP Server
Summary
by MITRE • 05/16/2025
A vulnerability was found in FreeFloat FTP Server 1.0 and classified as critical. This issue affects some unknown processing of the component MDELETE Command Handler. The manipulation leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
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Analysis
by VulDB Data Team • 06/23/2025
The vulnerability identified as CVE-2025-4792 represents a critical buffer overflow flaw within the FreeFloat FTP Server version 1.0, specifically within the MDELETE Command Handler component. This type of vulnerability falls under CWE-121, which describes stack-based buffer overflow conditions where insufficient boundary checking allows attackers to overwrite adjacent memory locations. The MDELETE command handler processes delete operations within the FTP server, making it a critical component for file management functionality. The buffer overflow occurs when the server fails to properly validate or limit the length of data submitted through the MDELETE command, creating an opportunity for malicious input to exceed allocated memory boundaries.
The remote exploitability of this vulnerability presents significant operational risks to systems running the affected FreeFloat FTP Server version. Attackers can leverage this flaw by sending specially crafted MDELETE commands over the network to trigger the buffer overflow condition. This allows for arbitrary code execution on the vulnerable system, potentially enabling full system compromise. The public disclosure of exploitation techniques further amplifies the threat level, as it removes the element of surprise that typically protects against zero-day vulnerabilities. The attack vector requires no authentication for initial exploitation, making it particularly dangerous for systems exposed to untrusted networks.
The operational impact of CVE-2025-4792 extends beyond simple system compromise to include potential data loss, unauthorized access to sensitive files, and complete system takeover. Organizations utilizing FreeFloat FTP Server 1.0 may face unauthorized access to stored files, including potentially confidential or proprietary data. The buffer overflow could also lead to denial of service conditions where the server crashes or becomes unresponsive, disrupting legitimate file transfer operations. From an attacker perspective, this vulnerability aligns with ATT&CK technique T1190, which involves exploiting vulnerabilities in remote services, and T1059, which covers command and scripting interpreters for execution. The compromise of an FTP server can serve as a foothold for broader network infiltration, particularly in environments where FTP servers are used for file sharing or backup operations.
Organizations should immediately implement mitigations including patching the FreeFloat FTP Server to a version that addresses this buffer overflow vulnerability, implementing network segmentation to limit access to FTP services, and deploying intrusion detection systems to monitor for exploitation attempts. The solution approach should follow security best practices outlined in NIST SP 800-128 for vulnerability management and remediation. Additionally, administrators should consider disabling unnecessary FTP services, implementing strong access controls, and conducting regular security assessments to identify similar vulnerabilities in other network services. The vulnerability demonstrates the critical importance of maintaining up-to-date software versions and implementing defense-in-depth strategies to protect against remotely exploitable buffer overflow conditions that can lead to complete system compromise.