CVE-2010-20122 Xftp FTP Client <= 3.0 PWD Response Buffer Overflow
Remote attackers can execute arbitrary code on Xftp client systems by sending a maliciously crafted PWD response from an FTP server.
- 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-2010-20122?
CVE-2010-20122 is a critical memory corruption vulnerability in NetSarang Computer, Inc. Xftp FTP Client, published on 21 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Xftp FTP Client version up to and including 3.0 (build 0238) contain a stack-based buffer overflow vulnerability triggered by a maliciously crafted PWD response from an FTP server. When the client connects to a server and receives an overly long directory string in response to the PWD command, the client fails to properly validate the length of the input before copying it into a fixed-size buffer. This results in memory corruption and allows remote attackers to execute arbitrary code on the client system.
Weakness: CWE-121
Which versions are affected by CVE-2010-20122?
How do I fix CVE-2010-20122?
No fix has been published for CVE-2010-20122 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-2010-20122 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2010-20122 exists.
Public exploit code: 1 Metasploit module.
Sources
Also known as GHSA-23ff-vxpg-784h.