Microsoft Exchange Server 2000 SP3, 2003 SP1 and SP2, and 2007 does not properly decode certain MIME encoded e-mails, which allows remote attackers to execute arbitrary code via a crafted base64-encoded MIME e-mail message.
- http://packetstormsecurity.com/files/153533/Microsoft-Exchange-2003-base64-MIME-Remote-Code-Execution.html
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-026
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