WordPress 4.6.1 is a security release for all previous versions of the software. The fix addresses bugs in the main WordPress content management system itself. Just about any site running WordPress could be at risk from the bug. The software has automatic security updates so you can be sure that your site is running the latest version of WordPress.com. The update is easy to update your site using Dashboard > Updates.com to make sure you have the latest software available. The software is now available to all sites running from WordPress.org.com.”]
Source: https://grahamcluley.com/wordpress-bloggers-strongly-encouraged-immediately-apply-security-update/