EUVD-2025-16803CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Lifecycle Timeline
4Description
A vulnerability was found in FreeFloat FTP Server 1.0. It has been classified as critical. This affects an unknown part of the component SYSTEM Command Handler. The manipulation leads to buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.
Analysis
Critical buffer overflow vulnerability in FreeFloat FTP Server 1.0's SYSTEM Command Handler that allows unauthenticated remote attackers to achieve information disclosure, integrity violation, and service disruption. The vulnerability has been publicly disclosed with exploit code available, making it actively exploitable in real-world environments without requiring user interaction or elevated privileges.
Technical Context
The vulnerability exists in the SYSTEM Command Handler component of FreeFloat FTP Server 1.0 (CPE: cpe:2.3:a:freefloat:ftp_server:1.0:*:*:*:*:*:*:*). The root cause is CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer), a classic buffer overflow condition where user-supplied input to FTP protocol commands is not properly validated before being written to a fixed-size buffer. FTP servers implement command handlers that parse and execute client directives; the SYSTEM command handler specifically appears to lack input length validation, allowing an attacker to overflow the buffer with crafted FTP commands and execute arbitrary code or corrupt memory structures.
Affected Products
- product: FreeFloat FTP Server; versions: ['1.0']; cpe: cpe:2.3:a:freefloat:ftp_server:1.0:*:*:*:*:*:*:*; component: SYSTEM Command Handler; vulnerability_type: Buffer Overflow
Remediation
Immediate remediation steps: (1) Upgrade FreeFloat FTP Server to a patched version (vendor patch release information not provided in available data—contact FreeFloat/Unimative for patch availability); (2) If patching is not immediately possible, implement network-level mitigations: restrict FTP access via firewall ACLs to authorized IP ranges only, disable the SYSTEM command handler if possible through configuration, or disable the FTP service entirely if not critical; (3) Monitor FTP server logs for unusual SYSTEM command patterns or oversized input payloads; (4) Consider replacing FreeFloat FTP Server with modern maintained alternatives (vsftpd, ProFTPD, Pure-FTPd) that receive security updates; (5) Segment the FTP server on an isolated network with limited lateral movement capabilities.
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External POC / Exploit Code
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