If you’re on iOS 6.1, and you use a passcode, then you might not really be fully protected by the passcode.
JailbreakNation yesterday posted a guide on how to circumvent the passcode on the lock screen and get into the iOS device's Phone application. The person exploiting the vulnerability will have full access to the Phone application, including contacts, recent calls, voicemail, photos, and more.
According to AllThingsD, Apple Thursday acknowledged the security hole and says that it will be fixed in a future software update. It is not known if the security hole will come as a hot-fix like iOS 6.1.1 on the iPhone 4S, or if the fix will come in the upcoming iOS software update that was once called iOS 6.1.1 beta and will be renamed because of iOS 6.1.1 coming out to the public on the iPhone 4S.
According to the Apple spokeswoman that talked to AllThingsD:
"Apple takes user security very seriously. We are aware of this issue, and will deliver a fix in a future software update."
It isn't known if the upcoming software update will be vulnerable to the evasi0n jailbreak, so if you rely on a jailbreak, you might want to sit tight and just keep your eye on your iPhone the old-fashioned way – ultimately, it's up to you to pick between a jailbreak or patching a major security hole.
If we're lucky, Apple will release another iOS 6.1.1-like hot-patch that will still be vulnerable to the evasi0n jailbreak.