Kenya Cyber Security Report 2015 Top Global Software Vulnerabilities 2015 During our review, we noted a total of 4,365 vulnerabilities worldwide. Denial of Service (DOS) and Code Execution vulnerabilities featured as the highest vulnerabilities as at September 2015. Most of the systems affected by these two vulnerabilities were missing critical patches, whereas others had been misconfigured, thus exposing the systems to attack. Majority of the web server attacks in the years 2014 and 2015 were caused by the successful exploitation of the top two vulnerabilities. Denial of Service (DOS) & Code Execution highest as at September 2015 4,365 vulnerabilities 43