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.

Websense Email Security 7.1 before Hotfix 4 allows remote attackers to bypass the sender-based blacklist by using the 8BITMIME EHLO keyword in the SMTP session.

Multiple cross-site scripting (XSS) vulnerabilities in the Web Administrator in Websense Personal Email Manager 7.1 before Hotfix 4 and Email Security 7.1 before Hotfix 4 allow remote attackers to inject arbitrary web script or HTML via the (1) FileName, (2) IsolatedMessageID, (3) ServerName, (4) Dictionary, (5) Scoring, and (6) MessagePart parameters to web/msgList/viewmsg/actions/msgAnalyse.asp; the (7) Queue, (8) FileName, (9) IsolatedMessageID, and (10) ServerName parameters to actions/msgForwardToRiskFilter.asp and viewHeaders.asp in web/msgList/viewmsg/; and (11) the subject in an e-mail message that is held in a Queue.