The remote host is missing an update to cvs announced via advisory DSA 519-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20519-1

Sebastian Krahmer and Stefan Esser discovered several vulnerabilities in the CVS server, which serves the popular Concurrent Versions System. The Common Vulnerability and Exposures project identifies the following problems: CVE-2004-0416: double-free() in error_prog_name CVE-2004-0417: argument integer overflow CVE-2004-0418: out of bound writes in serve_notify() For the stable distribution (woody) this problem has been fixed in version 1.11.1p1debian-9woody7. For the unstable distribution (sid) this problem has been fixed in version 1.12.9-1. We recommend that you upgrade your cvs package.