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

Medium 6.9 Published 5 Aug 2025 Updated 7 Apr 2026

Remote attackers can execute arbitrary code on FreeFloat FTP Server by sending an overly long username string to the USER command.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2012-10023?

CVE-2012-10023 is a medium-severity memory corruption vulnerability in FreeFloat FTP Server, published on 5 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-121

Which versions are affected by CVE-2012-10023?

It affects 1 product.

Products include Freefloat Freefloat Ftp Server.

How do I fix CVE-2012-10023?

No fix has been published for CVE-2012-10023 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2012-10023 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2012-10023 exists.

Public exploit code: 1 Metasploit module.

Sources

Also known as GHSA-v5vr-r7j6-q2w6.