Reason for Revision:
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On June 12, 2002, Microsoft released the original version of this bulletin. On July 1, 2002, the bulletin was updated to revise the severity rating. Specifically, Microsoft has increased the severity rating of this issue to "critical ." The revision is in response to a significant change in the threat environment due to an increased focus on chunked encoding vulnerabilities in general, and the discovery of hostile code attempting to exploit similar vulnerabilities on other platforms. Customers who have already disabled HTR or applied this patch need not take any action. Customers who have not disabled HTR should do so as soon as possible. Alternately, customers who cannot disable HTR should apply the patch immediately.

Microsoft encourages customers to review the Security Bulletin at: http://www.microsoft.com/technet/security/bulletin/MS02-028.asp.