CVE-2018-7573: Ftpshell Client

Critical severity, CVSS 9.8. EPSS: 69.2% chance of exploitation in the next 30 days.

An issue was discovered in FTPShell Client 6.7. A remote FTP server can send 400 characters of 'F' in conjunction with the FTP 220 response code to crash the application; after this overflow, one can run arbitrary code on the victim machine. This is similar to CVE-2009-3364 and CVE-2017-6465.

Affected products

• Ftpshell Ftpshell Client: version 6.70 only

Published 2018-03-01. Last modified 2026-06-17.