An official statement from BlackBerry manufacturer Research in Motion (RIM) has given details of a known vulnerability in the popular smartphones' software that could allow malware writers to hijack specific handsets.
It emerged that the BlackBerry Attachment Service, which works in tandem with the BlackBerry Enterprise Server to deliver attached email content to mobiles, has a vulnerability within its PDF function.
An RIM spokesperson explained that it would be possible for a criminal to hack into a BlackBerry by sending a malicious PDF to the user's account.
The exploit would enable a DOS (denial of service) attack by corrupting the memory, or potentially allow the criminal to gain control of the phone.
RIM has already patched the problem and updated the security software for the various BlackBerry handsets and users are actively encouraged to update their handsets regularly to avoid such threats.
In April 2009, a similar vulnerability was identified by RIM, but this latest loophole is thought to be far more dangerous, with a security risk rating of up to 9.3 out of 10 for the most damaging form of the software.
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