Clearswift MAILsweeper 4.x allows remote attackers to bypass attachment detection via an attachment that does not specify a MIME-Version header field, which is processed by some mail clients.
http://www.securityfocus.com/bid/7044
http://www.securityfocus.com/archive/1/316311
http://marc.info/?l=bugtraq&m=104716030503607&w=2
Source: Mitre, NVD
Published: 2003-03-18
Updated: 2016-10-18
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 5.3
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Severity: Medium