MS-ISAC has issued an alert related to multiple vulnerabilities that have been discovered in PHP. It is recommended that all sites using PHP should update to the latest PHP version as soon as possible.

We have updated our PHP versions accordingly:

PHP 5.6 version from 5.6.40-1 to 5.6.40-12
PHP 7.0 version from 7.0.33-10 to 7.0.33-11
PHP 7.1 version from 7.1.27-1 to 7.1.32-1
PHP 7.2 version from 7.2.19-1 to 7.2.22-1

This update will be deployed today on all Hypernodes that have either of these PHP versions enabled. These PHP updates should have no impact on your Magento shop. However we do recommend our customers to check their webshop.

For a complete list of changes see the PHP 7 ChangeLog.
Check out this page for more info on the PHP vulnerability detection.