Microsoft has released a new security patch for Windows NT 4.0: Flaw in Windows Function Could Allow Denial of Service

A flaw exists in a Windows NT 4.0 Server file management function that can cause a denial of service vulnerability. The flaw results because the affected function can cause memory that it does not own to be freed when a specially crafted request is passed to it. If the application making the request to the function does not carry out any user input validation and allows the specially crafted request to be passed to the function, the function may free memory that it does not own. As a result, the application passing the request could fail.

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