Security Experts at IBM have discovered a new critical vulnerability affecting Android OS and impacting more than 55 percent users.

There is no peace for the Android users, recently experts discovered the critical Stagefright vulnerability and other serious flaws like the Certifi-gate vulnerability and CVE-2015-3823 flaw.

Now experts from IBM have discovered another critical bug in the Google Android OS that impacts more than 55 percent of all the mobile devices.

The researchers explained that the new bug, coded as CVE-2015-3825,  is a privilege escalation vulnerability in the Android platform that could be exploited to allow “a malicious app with no privileges, the ability to become a ‘super app’ and help the cybercriminals own the device.”

The flaw, dubbed Android serialization vulnerability, affects Android versions 4.3 and above, including the latest release Android M.

The vulnerability resides in the Android OS component called OpenSSLX509Certificate, the attackers can exploit it to compromise the system_server process and gain powerful system-level access to the mobile device.

The researchers published a video proof-of-concept for the exploitation of the flaw, in the video the attacker exploits the flaw using a malicious app by replacing the legitimate Facebook app to steal victim’s credentials.

When the victim runs the app, it downloads additional code to replace the existing app with a malicious code, including an exploit used to escalate permissions using the vulnerability.