A security flaw in Adobe Systems' popular Acrobat and Reader applications could be used to shut down or hijack vulnerable PCs.

By crafting a malicious PDF file, a remote attacker could cause the applications to crash or possibly commandeer the target computer, Adobe said in a security advisory published on Tuesday. The San Jose, Calif.-based software maker has updates available to fix the problem.
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Adobe warns of Reader, Acrobat bug | CNET News.com