Microsoft said Thursday that "critical" security lapses in its Office software and Internet Explorer Web browser put tens of millions of users at risk of having their files read and altered by online attackers.
The world's leading software maker said that an attacker, using e-mail or a Web page, could use Internet related parts of Office to run programs, alter data and wipe out a hard drive, as well as view file and clipboard contents on a user's system.
Office, which runs on Windows and is used to write documents and crunch numbers, is a major producer of revenue for Microsoft.
"Microsoft is committed to keeping customers' information safe, and is providing a patch that eliminates three vulnerabilities in Office Web Components," Microsoft Security Program Manager Christopher Budd said in an e-mail.
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