CVE-2010-20122
Xftp FTP Client <= 3.0 PWD Response Buffer Overflow
- State
- Published
- Severity
- 9.3 Critical
- Published
- Aug 21, 2025
- Updated
- May 15, 2026
- Reserved
- Aug 20, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
Weaknesses
- CWE-121 Stack-based Buffer Overflow
Affected Products
| Product | Versions |
|---|---|
Xftp FTP ClientNetSarang Computer, Inc. |
|
References
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/xftp_client_pwd.rbexploit
- https://www.exploit-db.com/exploits/12332exploit
- https://www.exploit-db.com/exploits/16739exploit
- https://web.archive.org/web/20090312072219/http://www.netsarang.com/download/down_xft3.htmlproduct
- https://www.vulncheck.com/advisories/xftp-ftp-client-pwd-response-buffer-overflowthird-party-advisory
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