CVE-2003-0121
HighSummary
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.
Risk Assessment
Attackers may exploit this vulnerability to send malicious attachments that will not be detected by security systems, potentially leading to infections or data breaches.
Recommendation
It is recommended to update the software to the latest version and implement additional attachment scanning mechanisms to minimize risk.
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Original NVD description (English source)
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.