In CentOS 6.x when you install PHP-fpm, you will get 5.3 by default, which is considered high risk as an unsupported version.
If you are still running 5.3 PHP-FPM, you must consider upgrading to the latest version 5.6. Here is how I did and you can too. As a best practice, you must take a backup of the entire PHP and if possible perform this upgrade in non-production first to ensure no side effects on the application due to a higher version.
PHP-FPM 5.6 Installation/Upgrade Procedure
Login into CentOS with root Execute following commands
If you need to install additional PHP-Modules like mbstring, mcrypt, soap,apc then you can use the following. By doing the above, you will have PHP-FPM latest version 5.6 installed.
Verify PHP-FPM version
So as you can see, now I have supported PHP version, which is secure and safe. Once you have a PHP upgraded version, you can also check your website for security vulnerabilities from these tools. If you are using WordPress then you can check this article where I explained how to update the WordPress PHP version on multiple platforms.
