MERCUR Messaging Server is an e-mail server supporting the SMTP, POP3, and IMAP protocols for Windows platforms.
A buffer overflow vulnerability allows remote, authenticated attackers to execute arbitrary commands by sending a long, specially crafted SUBSCRIBE command to the IMAP service.
Upgrade to MERCUR Messaging Server 5.0 SP5 or higher when available.
Exploit works on MERCUR Messaging Server 5.0 SP3 and SP4 and requires a valid user name and password.
The number of characters in the mail domain should be correct in order for the exploit to succeed.
Windows Server 2003 SP0
Windows Server 2003 SP1 / Windows Server 2003