CMS
Content Management Systems are most vulnerable from plugins they use.
Wordpress
The WordPress version is shown in the "generator" meta tag (unless removed by the site).
You may search the source code (CTRL-F) for "generator" to see the version.
This curl command will also show it. The "-s" flag is for "silent"
curl -s http://example.com/wordpress/ | grep generatorBasic information
wpscan --url https://192.168.26.141Check for vulnerable plugins
wpscan --url https://192.168.26.141:12380/blogblog --enumerate vpCheck for exploits that match the version of wordpress
wpscan --no-update --url http://www.example.com/wordpress/
wpscan --no-update --url http://www.example.com/wordpress/ | grep Title
wpscan --no-update --url http://www.example.com/wordpress/ | grep Title | wc -l