What’s Vulnerable › Vulnerabilities

CVE-2010-20034: Gekko Manager FTP Client <= 0.77 Stack Buffer Overflow

• Severity: high (CVSS 8.5 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-08-21 · updated 2026-06-16
• Weakness: CWE-121

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.

Affected products

• New Software S.C. Gekko Manager FTP Client: through 0.77

References

• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/gekkomgr_list_reply.rb
• https://web.archive.org/web/20111016194057/https://www.corelan.be/index.php/2010/10/12/death-of-an-ftp-client/
• https://www.exploit-db.com/exploits/16728
• https://www.gekkomanager.com/
• https://www.vulncheck.com/advisories/gekko-manager-ftp-client-stack-buffer-overflow
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/gekkomgr_list_reply.rb
• https://www.exploit-db.com/exploits/16728

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