10 of the 23 vulnerabilities have already been exploited or are public

Microsoft today released eight security updates that patch 23 vulnerabilities in Windows, Internet Explorer, Excel and other software in the company's portfolio -- a collection of fixes one researcher called "insane."

More dangerous than the sheer number of patches, however, is the fact that nearly half fix flaws that are already being exploited or are publicly known in enough detail to craft working exploits. In some cases, sample attack code is available.

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