Two weeks ago, WinRumors revealed the bug, which would crash the device and kill the messaging app upon receiving a special text message, and contacted Microsoft with the details, including the specific text which otherwise has not been published.
Now Microsoft apparently contacted Khaled Salameh, who originally found the bug. He tweeted that Microsoft’s security team “confirmed the WP7 SMS Bug and found the root cause, a fix is currently under testing”.
However, it should be noted that this bug seems to be common across a wide range of Microsoft products using its Silverlight/WPF framework, which includes Windows Phone but also desktop applications such as Windows Live Messenger, Visual Studio and Blend, according to Salameh. He says Microsoft is still investigating this issue.