Mobile security firm Zimperium Inc. has released an app for Android users to detect the presence of the Stagefright vulnerability in their phones.

Zimperium, who discovered the exploit, calls the vulnerability "extremely dangerous", as it doesn't require an affected user to take any action to be taken advantage of. The tool, which is available on Google Play, will let you know if your phone is at risk.



The bug is particularly troublesome because to execute an attack, an attacker only needs your mobile number. From there, they can remotely execute code using a "specially crafted media file" delivered through MMS.

The exploit can then give the attacker system or media privileges on your device.

"Stagefright can wreck havoc on carriers and enterprises using Android devices for business," Zimperium said in its app description on Google Play.

It's a pretty serious flaw, and Google has issued a patch, but not all phones are running the patched version of Android. Even newer phones could still be vulnerable, so it's a good idea to grab the app, scan your phone, and then update your OS if need be.

Zimperium put up a blog post to its site detailing the steps to protect your device against the exploit. It also lists off vendors affected by the bug, including Samsung, makers of the recently released Galaxy S6 Edge.