This Risk Rating Calculator is based on OWASP's Risk Rating Methodology: https://www.owasp.org/index.php/OWASP_Risk_Rating_Methodology
Rewrited from some old script from "The Net" by Ivan Marković ivanm@security-net.biz | Tnx @commjoenie for motivation :)
TODO: Optimize code, implement configurator for custom values in select boxes, more suggestions?
Online version: https://security-net.biz/files/owaspriskcalc.html