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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2010-20121 Detail

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.”


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  VulnCheck
CVSS-B 9.3 CRITICAL
Vector:  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

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://paulmakowski.wordpress.com/2010/02/28/increasing-payload-size-w-return-address-overwrite/ VulnCheck Exploit  Third Party Advisory 
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb CISA-ADP, VulnCheck Exploit 
https://seclists.org/bugtraq/2010/Feb/202 CISA-ADP, VulnCheck Exploit  Mailing List  Third Party Advisory 
https://www.exploit-db.com/exploits/11668 CISA-ADP, VulnCheck Exploit  VDB Entry 
https://www.exploit-db.com/exploits/12312 CISA-ADP, VulnCheck Exploit  VDB Entry 
https://www.exploit-db.com/exploits/14402 CISA-ADP, VulnCheck Exploit  VDB Entry 
https://www.exploit-db.com/exploits/16737 CISA-ADP, VulnCheck Exploit  VDB Entry 
https://www.vulncheck.com/advisories/easyftp-server-cwd-command-stack-buffer-overflow VulnCheck Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-121 Stack-based Buffer Overflow VulnCheck  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2010-20121
NVD Published Date:
08/21/2025
NVD Last Modified:
09/10/2025
Source:
VulnCheck