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.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mailsweeper | Clearswift | 4.0 (including) | 4.0 (including) |
| Mailsweeper | Clearswift | 4.1 (including) | 4.1 (including) |
| Mailsweeper | Clearswift | 4.2 (including) | 4.2 (including) |
| Mailsweeper | Clearswift | 4.3 (including) | 4.3 (including) |