The Receive Service in Websense Email Security before 7.1 does not recognize domain extensions in the blacklist, which allows remote attackers to bypass intended access restrictions and send e-mail messages via an SMTP session.

The Rules Service in Websense Email Security before 7.1 allows remote attackers to cause a denial of service (service crash) via an attachment with a crafted size.

The default configuration of the SMTP component in Websense Email Security 6.1 through 7.3 enables weak SSL ciphers in the "SurfControl plc\SuperScout Email Filter\SMTP" registry key, which makes it easier for remote attackers to obtain sensitive information by sniffing the network and then conducting a brute-force attack against encrypted session data.

The Personal Email Manager component in Websense Email Security before 7.2 allows remote attackers to obtain potentially sensitive information from the JBoss status page via an unspecified query.