This indicates an attempt to exploit a Buffer Overflow vulnerability in Sybase MobiLink.
The vulnerability is caused by a buffer overflow error in the MobiLink component, when processing overly long data (username, version or remote ID) sent to port 2439/TCP. It can be exploited by remote unauthenticated attackers to crash the application or execute arbitrary code.
Sybase MobiLink 10.0.1.3629
System Compromise: Remote code execution.
Denial of service.
Currently we are not aware of any vendor supplied patch for this issue.