The remote host is missing an update to cvs announced via advisory DSA 117-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20117-1

Kim Nielsen recently found an internal problem with the CVS server and reported it to the vuln-dev mailing list. The problem is triggered by an improperly initialized global variable. A user exploiting this can crash the CVS server, which may be accessed through the pserver service and running under a remote user id. It is not yet clear if the remote account can be exposed, through. This problem has been fixed in version 1.10.7-9 for the stable Debian distribution and in version newer than 1.11.1p1debian-3 for the testing and unstable distribution of Debian (not yet uploaded, though). We recommend that you upgrade your CVS package.