Advance notice offers clues Microsoft will update software hit by deep dev bug.

Microsoft today said it would deliver nine security updates next Tuesday, all but one affecting Windows. Five are pegged "critical," the company's highest threat rating.

One researcher speculated that most of the updates will tackle bugs introduced when a Microsoft programmer added an extra "&" character to a vital code library.

Of the nine updates previewed today in the monthly advance notification, eight affect various versions of Windows, while the ninth deals with vulnerabilities in Office, Visual Studio, Internet Security and Acceleration Server (ISA Server), BizTalk Server and other products.

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