Vulnerability Note VU#642428

Microsoft Excel fails to properly perform range validation when parsing document files

Original Release date: 14 Mar 2006 | Last revised: 14 Mar 2006


Microsoft Excel contains an error in range validation, which may allow a remote unauthenticated attacker to execute arbitrary code on a vulnerable system.


Microsoft Excel fails to properly validate ranges in data files. When a file with a malformed range is opened in Excel, system memory can be corrupted in a way that may allow an attacker to execute arbitrary code.


By convincing a user to open a specially crafted Excel file, a remote unauthenticated attacker may be able to execute arbitrary code on a vulnerable system.


Install an update

Install an update, as specified in Microsoft Security Bulletin MS06-012.

Do not access Excel files from untrusted sources

By only accessing Excel files, such as spreadsheets, from trusted or known sources, the chances of exploitation are reduced.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Microsoft CorporationAffected-14 Mar 2006
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



This vulnerability was publicly disclosed by fearwall.

This document was written by Will Dormann.

Other Information

  • CVE IDs: CVE-2005-4131
  • Date Public: 07 Dec 2005
  • Date First Published: 14 Mar 2006
  • Date Last Updated: 14 Mar 2006
  • Severity Metric: 16.45
  • Document Revision: 7


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