CVE-2001-1280: Ipswitch Imail

Medium severity, CVSS 5.0. EPSS: 2.2% chance of exploitation in the next 30 days.

POP3 Server for Ipswitch IMail 7.04 and earlier generates different responses to valid and invalid user names, which allows remote attackers to determine users on the system.

Affected products

• Ipswitch Imail: version 6.0.2 only; version 6.0.6 only; version 7.0.4 only

Published 2001-10-12. Last modified 2026-06-16.