CVE-2005-4559: Deerfield Visnetic Mail Server

Medium severity, CVSS 5.0. EPSS: 8.6% chance of exploitation in the next 30 days.

mail/include.html in IceWarp Web Mail 5.5.1, as used by Merak Mail Server 8.3.0r and VisNetic Mail Server version 8.3.0 build 1, does not properly initialize the default_layout and layout_settings variables when an unrecognized HTTP_USER_AGENT string is provided, which allows remote attackers to access arbitrary files via a request with an unrecognized User Agent that also specifies the desired default_layout and layout_settings parameters.

Affected products

• Deerfield Visnetic Mail Server: version 8.3.0_build1 only
• Icewarp Web Mail: version 5.5.1 only
• Merak Mail Server: version 8.3.0r only

Published 2005-12-28. Last modified 2026-06-16.