Cross-site scripting (XSS) vulnerability in index.html in IceWarp WebMail 5.5.1 and earlier allows remote attackers to inject arbitrary web script or HTML via the PHPSESSID parameter.

Multiple TCP implementations with Protection Against Wrapped Sequence Numbers (PAWS) with the timestamps option enabled allow remote attackers to cause a denial of service (connection loss) via a spoofed packet with a large timer value, which causes the host to discard later packets because they appear to be too old.

Multiple cross-site scripting (XSS) vulnerabilities in Merak Mail Server 8.0.3 with Icewarp Web Mail 5.4.2 allow remote authenticated users to inject arbitrary web script or HTML via (1) the E-mail address, Note, or Public Certificate fields to address.html, (2) addressaction.html, (3) the Signature field to settings.html, or (4) the Shared calendars to calendarsettings.html.

Unknown vulnerability in Merak Mail Server 8.0.3 with Icewarp Web Mail 5.4.2 allows remote authenticated users to obtain the full path of the server via certain requests to (1) calendar_addevent.html, (2) calendar_event.html, or (3) calendar_task.html.

Merak Mail Server 8.0.3 with Icewarp Web Mail 5.4.2, when the mailbox.dat file does not exist, allows remote authenticated users to determine if a file exists via the folder parameter to attachment.html.

Merak Mail Server 8.0.3 with Icewarp Web Mail 5.4.2 allows remote authenticated users to (1) move their home directory via viewaction.html or (2) move arbitrary files via the importfile parameter to importaction.html.