<A target="_blank" href="http://www.theregister.co.uk/2009/05/28/blackberry_pdf_peril/">Research In Motion (RIM) warns</A> there's a vulnerability in BlackBerry servers which could allow malformed PDF files to open the door to attackers. BlackBerry Enterprise Server software version 4.1 Service Pack 3 (4.1.3) through 5.0 and BlackBerry Professional Software 4.1 Service Pack 4 (4.1.4) are affected.