PC World posted a news story that Adobe today confirmed that attackers are exploiting an unpatched bug in Flash Player using Microsoft Excel documents.

According to a security advisory issued Monday, attackers are exploiting the vulnerability by embedding malicious Flash files within a Microsoft Excel document sent as an e-mail attachment.

Adobe said it wasn't aware of any attacks directed at Reader or Acrobat, the popular PDF viewer and commercial PDF creator, respectively.

"This vulnerability could cause a crash and potentially allow an attacker to take control of the affected system," Adobe acknowledged in its advisory.

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