Updating drupal core
Since it is closely integrated with Acquia Cloud, using Acquia Dev Desktop can be the easiest way to import your application into Acquia Cloud.
This section assumes that you have already installed Acquia Dev Desktop and synced it with your applications on Acquia Cloud.
[error] The drush command 'pm-update' could not be executed.
[error] Drush was not able to start (bootstrap) the Drupal database.
You'll still need to do the actual upgrade later though!
It protects you from the security hole, but you'll still need to update Drupal core for a long-term fix.
Please read this guide before updating Drupal core in your website.
The Drupal One-Click application comes with Drush, a command line tool for administering Drupal., pre-installed. First change into the directory containing Drupal: Command pm-update needs a higher bootstrap level to run - you will need to invoke drush from a more functional Drupal environment to run this command.
There are several reasons why Drupal websites should be updated on regular basis.If it did, Drupageddon could have never been a widespread issue.