CVEvulnerability
CVE-2010-20121
9.3 CRITICAL
Official page ↗
- Status
- Analyzed
- Published
- 2025-08-21
- Last modified
- 2026-06-16
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 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/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
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-121
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.”
Affected configurations
• easyftp server project easyftp server (< 1.7.0.12)
Related
Weakness · CWE (1)
- CWE-121 Stack-based Buffer Overflow weakness
References
- https://paulmakowski.wordpress.com/2010/02/28/increasing-payload-size-w-return-address-overwrite/ Exploit, Third Party Advisory
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb Exploit
- https://seclists.org/bugtraq/2010/Feb/202 Exploit, Mailing List, Third Party Advisory
- https://www.exploit-db.com/exploits/11668 Exploit, VDB Entry
- https://www.exploit-db.com/exploits/12312 Exploit, VDB Entry
- https://www.exploit-db.com/exploits/14402 Exploit, VDB Entry
- https://www.exploit-db.com/exploits/16737 Exploit, VDB Entry
- https://www.vulncheck.com/advisories/easyftp-server-cwd-command-stack-buffer-overflow Third Party Advisory
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb Exploit
- https://seclists.org/bugtraq/2010/Feb/202 Exploit, Mailing List, Third Party Advisory
- https://www.exploit-db.com/exploits/11668 Exploit, VDB Entry
- https://www.exploit-db.com/exploits/12312 Exploit, VDB Entry
- https://www.exploit-db.com/exploits/14402 Exploit, VDB Entry
- https://www.exploit-db.com/exploits/16737 Exploit, VDB Entry