The remote host is missing an update to splitvt announced via advisory DSA 014-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%20014-1

It was reported recently that splitvt is vulnerable to numerous buffer overflow attack and a format string attack. An attacker was able to gain access to the tty group. We recommend you upgrade your splitvt package immediately.