PC World reports that Adobe today warned users that attacks have begun exploiting an unpatched bug in its popular Reader and Acrobat PDF viewing and creation software

Adobe today warned users that attacks have begun exploiting an unpatched bug in its popular Reader and Acrobat PDF viewing and creation software.

The company issued an advisory on short notice today, saying that it had learned of in-the-wild attacks only on Tuesday.

"A critical vulnerability exists in Adobe Reader 9.3.4 and earlier versions for Windows, Macintosh and UNIX, and Adobe Acrobat 9.3.4 and earlier versions for Windows and Macintosh," Adobe's warning read. This vulnerability could cause a crash and potentially allow an attacker to take control of the affected system.

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