Apple (NASDAQ:AAPL) iOS 7 beta is being tested by registered developers for more than two days and one user of the new software has claimed to have found a security flaw.

Forbes reported that it has obtained a video from an iPhone user, which showed how anyone can bypass the lock screen on an iPhone running Apple’s latest iOS 7 beta in a few moments.

An intruder can evade the security feature by opening iOS Control Room and accessing the phone’s calculator application before opening the phone’s camera. After bypassing the lock screen, anyone can access photo albums, and delete, email, or even tweet photos saved in the device without knowing the passcode.

Forbes claimed that the trick has been successfully reproduced by its staff.

The new bug found in the first beta version of iOS 7 reiterates the history of iOS security flaws by targeting the iPhone’s lock screen. In March, Apple released iOS 6.1.3 firmware update, claiming to fix a notorious passcode unlock bug, which affected many devices running iOS 6.1 earlier this year.

However, just a day after Apple released the bug fix, reports surfaced saying that the iOS 6.1.3 was also affected by an all-new lock screen vulnerability, allowing unauthorized users to bypass the passcode and access data within the device.

Take a look at the video here for a full demonstration of the security flaw:

A bug in the iOS 7 beta does not come as surprise because the software is nowhere near a public release for consumers. According to many developers, the software is currently buggy and needs to be fine-tuned before the expected fall release.

Considering that it is just the first beta of iOS 7 and four to five more beta versions are likely to be seeded to developers, Apple is expected to patch the bug in the coming days.