CVE-2010-20034

HIGH

Gekko Manager FTP Client <= 0.77 - Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2010-20034. PoCs published by Metasploit, nullthreat, including Metasploit module exploits/windows/ftp/gekkomgr_list_reply.

AI-analyzed exploit summary This exploit targets a stack-based buffer overflow in Gekko Manager FTP client by sending a maliciously crafted LIST response with an overly long filename, overwriting a structured exception handler (SEH) to achieve remote code execution.

Description

Gekko Manager FTP Client <= 0.77 contains a stack-based buffer overflow in its FTP directory listing parser. When processing a server response to a LIST command, the client fails to properly validate the length of filenames. A crafted response containing an overly long filename can overwrite the Structured Exception Handler (SEH), potentially allowing remote code execution.

Exploits (2)

exploitdb WORKING POC VERIFIED
by Metasploit · rubyremotewindows
https://www.exploit-db.com/exploits/16728

This exploit targets a stack-based buffer overflow in Gekko Manager FTP client by sending a maliciously crafted LIST response with an overly long filename, overwriting a structured exception handler (SEH) to achieve remote code execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Gekko Manager FTP Client (version unspecified, likely pre-2010)
No auth needed
Prerequisites: Network access to the target FTP client · Target must initiate an FTP connection to the attacker's server
devstral-2 · analyzed Feb 16, 2026 Full analysis →
metasploit WORKING POC GOOD
by nullthreat · rubypocwin
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/ftp/gekkomgr_list_reply.rb

This Metasploit module exploits a stack-based buffer overflow in Gekko Manager FTP client by sending a maliciously crafted LIST response with an overly long filename, overwriting a structured exception handler (SEH) to achieve remote code execution.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Gekko Manager FTP Client (version not specified, likely pre-2010)
No auth needed
Prerequisites: Network access to the target FTP client · Target must initiate an FTP connection to the attacker-controlled server
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Scores

CVSS v4 8.5
EPSS 0.0048
EPSS Percentile 37.2%
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-121
Status published
Products (1)
New Software S.C./Gekko Manager FTP Client < 0.77
Published Aug 21, 2025
Tracked Since Feb 18, 2026