Clearswift MIMEsweeper For Web (a.k.a. WEBsweeper) 4.0 through 5.1 allows remote attackers to bypass filtering via a URL that does not include a .exe extension but returns an executable file.
Directory traversal vulnerability in MIMEsweeper for Web before 5.0.4 allows remote attackers or local users to read arbitrary files via "..\\", "..\", and similar dot dot sequences in the URL.