MMS can crash your Windows mobile

It turns out that a long MMS message can crash Pocket PC 2003 and Windows Smartphone 2003 devices (via The Register) — the iPAQ 6315 and imate PDA2k are definitely vulnerable. Theoretically, this means that a malicious MMS can infect your phone, but

… even in those devices the attacker needs to guess the correct memory slot where the MMS processing code is executing and send correctly crafted exploit code. This means that a malicious MMS message will most likely only be able to crash the device, not to to exploit it.

In short, this exploit is not a major risk to most users.