CVE-2009-4775: Ipswitch Ws FTP

Medium severity, CVSS 4.3. EPSS: 5.6% chance of exploitation in the next 30 days.

Format string vulnerability in Ipswitch WS_FTP Professional 12 before 12.2 allows remote attackers to cause a denial of service (crash) via format string specifiers in the status code portion of an HTTP response.

Affected products

• Ipswitch Ws FTP: version 12.0 only; version 12.0.1 only

Published 2010-04-21. Last modified 2026-06-16.