What’s Vulnerable › Vulnerabilities

CVE-2012-10023: FreeFloat FTP Server USER Command Buffer Overflow

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-08-05 · updated 2026-06-16
• Weakness: CWE-121

Description

A stack-based buffer overflow vulnerability exists in FreeFloat FTP Server version 1.0.0. The server fails to properly validate input passed to the USER command, allowing remote attackers to overwrite memory and potentially execute arbitrary code. The flaw is triggered by sending an overly long username string, which overflows the buffer allocated for user authentication.

Affected products

• FreeFloat FTP Server: 1.0

References

• https://my.saintcorporation.com/cgi-bin/exploit_info/freefloat_ftp_server_user_cmd
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/freefloatftp_user.rb
• https://web.archive.org/web/20101208040029/http://secunia.com/advisories/42465/
• https://web.archive.org/web/20101213050627/http://www.freefloat.com/sv/about-/about-.php
• https://www.exploit-db.com/exploits/15689
• https://www.exploit-db.com/exploits/23243
• https://www.vulncheck.com/advisories/freefloat-ftp-server-user-command-buffer-overflow
• https://www.exploit-db.com/exploits/23243

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