Version 4.0.15

On 26 Jan, 2017, WordPress 4.0.15 was released to the public.

Installation/Update Information

To download WordPress 4.0.15, update automatically from the Dashboard > Updates menu in your site’s admin area or visit https://wordpress.org/download/release-archive/.

For step-by-step instructions on installing and updating WordPress:

If you are new to WordPress, we recommend that you begin with the following:

From the WordPress 4.7.2 release post: WordPress versions 4.7.1 and earlier are affected by three security issues:

The user interface for assigning taxonomy terms in Press This is shown to users who do not have permissions to use it. Reported by David Herrera of Alley Interactive.
WP_Query is vulnerable to a SQL injection (SQLi) when passing unsafe data. WordPress core is not directly vulnerable to this issue, but we’ve added hardening to prevent plugins and themes from accidentally causing a vulnerability. Reported by Mo Jangda(batmoo).
A cross-site scripting (XSS) vulnerability was discovered in the posts list table. Reported by Ian Dunn of the WordPress Security Team.

wp-admin/includes/class-wp-posts-list-table.php
wp-admin/press-this.php
wp-admin/about.php
wp-includes/version.php
wp-includes/query.php
readme.html