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 an attempt to exploit a vulnerability in Microsoft Excel which could lead to remote code execution.
A remote code execution vulnerability exists in the way Excel handles conditional formatting values. An attacker could exploit the vulnerability by sending a malformed file which could be hosted on a specially crafted or compromised Web site, or included as an e-mail attachment.
To view this vulnerability as a standard entry in the Common Vulnerabilities and Exposures list, see CVE-2008-0117.
- Microsoft Office Excel 2000 Service Pack 3
- Microsoft Office Excel 2002 Service Pack 3
- Microsoft Office 2004 for Mac
- Microsoft Office 2008 for Mac
Download and install all vendor patches related to this issue.