Search engine optimization is all about good content and using a CMS should ideally help your SEO efforts. However this is not always true, Well CMS does help you create fresh content with ease and this is what they are meant for. Implementing CMS is good for SEO however it can be a disaster as well.
To reason it further, let’s understand that the CMS are designed primarily to manage contents not keeping in mind Search Engine Marketing. This leads to situation wherein search engines are not able to index such contents. Here are some drawbacks that restrict Search engine access to contents.