Blackberry has announced that vulnerabilities in its Blackberry Enterprise Server could possibly allow malicious code in image files to be executed remotely. The flaw that been rated as “high severity” works in the following manner: A malicious person writes a special code and then embeds it in a TIFF image file. … As soon as the image file loads on the phone, the code runs on the Blackberry Enterprise server and either opens up a back door in the network or causes the network to crash altogether as instructed in the basic code.