The remote host is vulnerable to multiple attack vectors.
The remote host seems to be running either Gaim, a popular open-source multi-protocol instant messenger, either Ultramagnetic, a clone of Gaim that includes encryption features. It is reported that the version of the running software is prone to 12 security problems including buffer and stack overflows. These vulnerabilities may permit an attacker to execute arbitrary code on the remote host.
Upgrade to Gaim version 0.76 or higher or to Ultramagnetic 0.81.0 or higher.