CVE-2010-20121
EasyFTP Server <= 1.7.0.11 CWD Command Stack Buffer Overflow
Description
EasyFTP Server versions up to 1.7.0.11 contain a stack-based buffer overflow vulnerability in the FTP command parser. When processing the CWD (Change Working Directory) command, the server fails to properly validate the length of the input string, allowing attackers to overwrite memory on the stack. This flaw enables remote code execution without authentication, as EasyFTP allows anonymous access by default. The vulnerability was resolved in version 1.7.0.12, after which the product was renamed “UplusFtp.”
INFO
Published Date :
Aug. 21, 2025, 8:15 p.m.
Last Modified :
Sept. 10, 2025, 8:03 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | CRITICAL | [email protected] |
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2010-20121.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2010-20121 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2010-20121
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2010-20121 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2010-20121 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Sep. 10, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:easyftp_server_project:easyftp_server:*:*:*:*:*:*:*:* versions up to (excluding) 1.7.0.12 Added Reference Type VulnCheck: https://paulmakowski.wordpress.com/2010/02/28/increasing-payload-size-w-return-address-overwrite/ Types: Exploit, Third Party Advisory Added Reference Type VulnCheck: https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb Types: Exploit Added Reference Type VulnCheck: https://seclists.org/bugtraq/2010/Feb/202 Types: Exploit, Mailing List, Third Party Advisory Added Reference Type VulnCheck: https://www.exploit-db.com/exploits/11668 Types: Exploit, VDB Entry Added Reference Type VulnCheck: https://www.exploit-db.com/exploits/12312 Types: Exploit, VDB Entry Added Reference Type VulnCheck: https://www.exploit-db.com/exploits/14402 Types: Exploit, VDB Entry Added Reference Type CISA-ADP: https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb Types: Exploit Added Reference Type CISA-ADP: https://seclists.org/bugtraq/2010/Feb/202 Types: Exploit, Mailing List, Third Party Advisory Added Reference Type VulnCheck: https://www.exploit-db.com/exploits/16737 Types: Exploit, VDB Entry Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/easyftp-server-cwd-command-stack-buffer-overflow Types: Third Party Advisory Added Reference Type CISA-ADP: https://www.exploit-db.com/exploits/16737 Types: Exploit, VDB Entry Added Reference Type CISA-ADP: https://www.exploit-db.com/exploits/14402 Types: Exploit, VDB Entry Added Reference Type CISA-ADP: https://www.exploit-db.com/exploits/12312 Types: Exploit, VDB Entry Added Reference Type CISA-ADP: https://www.exploit-db.com/exploits/11668 Types: Exploit, VDB Entry -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 22, 2025
Action Type Old Value New Value Added Reference https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb Added Reference https://seclists.org/bugtraq/2010/Feb/202 Added Reference https://www.exploit-db.com/exploits/11668 Added Reference https://www.exploit-db.com/exploits/12312 Added Reference https://www.exploit-db.com/exploits/14402 Added Reference https://www.exploit-db.com/exploits/16737 -
New CVE Received by [email protected]
Aug. 21, 2025
Action Type Old Value New Value Added Description EasyFTP Server versions up to 1.7.0.11 contain a stack-based buffer overflow vulnerability in the FTP command parser. When processing the CWD (Change Working Directory) command, the server fails to properly validate the length of the input string, allowing attackers to overwrite memory on the stack. This flaw enables remote code execution without authentication, as EasyFTP allows anonymous access by default. The vulnerability was resolved in version 1.7.0.12, after which the product was renamed “UplusFtp.” Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CWE CWE-121 Added Reference https://paulmakowski.wordpress.com/2010/02/28/increasing-payload-size-w-return-address-overwrite/ Added Reference https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb Added Reference https://seclists.org/bugtraq/2010/Feb/202 Added Reference https://www.exploit-db.com/exploits/11668 Added Reference https://www.exploit-db.com/exploits/12312 Added Reference https://www.exploit-db.com/exploits/14402 Added Reference https://www.exploit-db.com/exploits/16737 Added Reference https://www.vulncheck.com/advisories/easyftp-server-cwd-command-stack-buffer-overflow