This attack could pose a serious security threat. You should take immediate action to stop any damage or prevent further damage from happening.
This signature detects attempts to exploit an remote code execution vulnerability in Microsoft Internet Explorer.
Microsoft Internet Explorer is prone to an unspecified arbitrary code-execution vulnerability. Specifically, this issue occurs because the VBScript engine improperly accesses objects in memory. Successfully exploited the vulnerability could gain the same user rights as the current user.
Attackers can exploit this vulnerability to execute arbitrary code in the context of the affected application.