The File Blocker feature in Clearswift MAILsweeper for SMTP 4.2 allows remote attackers to bypass e-mail attachment filtering policies via a modified name in a Content-Type header.
7.1AI Score
0.005EPSS
Clearswift MAILsweeper for SMTP 4.3.6 SP1 does not execute custom "on strip unsuccessful" hooks, which allows remote attackers to bypass e-mail attachment filtering policies via an attachment that MAILsweeper can detect but not remove.
7.4AI Score
0.006EPSS