Affected Products
MythControl version 1.0 and prior

Technical Description
A vulnerability has been identified in MythControl, which could be exploited by remote attackers to execute arbitrary commands or cause a denial of service. This issue is due to a buffer overflow error in the "sendToMythTV()" [MythControlServer/mythControlServer.c] function when handling an overly long command, which could be exploited by remote attackers to crash a vulnerable application or compromise an affected system via a specially crafted request.

Link:
http://www.frsirt.com/english/advisories/2007/0024

In the past, Isaac has stated that MythTV isn't built w/ security in mind for performance reasons. It has also been my opinion that at MythTV system should be behind a firewall. I personally am not worried. If you have not, the place to query about this is the MythTV mailing list.

Thanks Cecil. Keep up the good work!