This indicates an attack attempt against a buffer-overflow vulnerability in Archive Searcher.
The vulnerability is caused by an error when the vulnerable software handles a malicious zip file. It allows a remote attacker to execute arbitrary code via sending a crafted zip file.
System Compromise: Remote attackers can gain control of vulnerable systems.
Archive Searcher 2.1; other versions may be affected.
Currently we are not aware of any official patch for this issue.