Vulnerability Note VU#806548

Microsoft Word 2000 malformed record vulnerability

Original Release date: 07 Sep 2006 | Last revised: 10 Oct 2006


Microsoft Word 2000 contains a memory corruption vulnerability. This vulnerability could allow a remote, unauthenticated attacker to execute arbitrary code with the privileges of the user running Word 2000.


Microsoft Word 2000 fails to properly handle malformed records leading to memory corruption. For more information refer to Microsoft Security Bulletin MS06-060.

Note that we have received reports that this vulnerability is actively being exploited.


By convincing a user to open a specially crafted Word document, an attacker could execute arbitrary code with the privileges of the user running Word 2000. If the user is logged in with administrative privileges, the attacker could take complete control of a vulnerable system.


Apply an update
This vulnerability is addressed in Microsoft Security Bulletin MS06-060.

Do not open untrusted Word documents

Do not open unfamiliar or unexpected Word or other Office documents, particularly those hosted on web sites or delivered as email attachments. Please see Cyber Security Tip ST04-010 for more information.

Do not rely on file name extension filtering

In most cases, Windows will call Word to open a document even if the document has an unknown file extension. For example, if document.qwer contains the correct file header information, Windows will open document.qwer with Word. Filtering for common extensions (e.g., .doc, .dot, .rtf) may not detect all Word documents.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Microsoft CorporationAffected05 Sep 200610 Oct 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 reported by Juha-Matti Laurio.

This document was written by Jeff Gennari.

Other Information

  • CVE IDs: CVE-2006-4534
  • Date Public: 05 Sep 2006
  • Date First Published: 07 Sep 2006
  • Date Last Updated: 10 Oct 2006
  • Severity Metric: 25.06
  • Document Revision: 34


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