Researchers at the security firm CheckPoint have discovered three fresh critical zero day vulnerability in the last PHP 7.0. The vulnerabilities allow an attacker to take full control over 80 percent of websites which run on the latest release of the popular web programming language. One of the vulnerabilities remains unpatched again. The vulnerability triggers a remote Denial of Service attack/threat which basically hangs the website, exhausts its memory consumption, and a possible site down. To ensure your webservers security, we recommend you should upgrade to latest version of PHP.”]
Source: http://securityaffairs.co/wordpress/54879/hacking/0-day-php-7.html