The number of zero-day and Web browser vulnerabilities shot up in 2014, but vendors are patching faster. The data comes from Secunia, a Danish security vendor that releases an annual study of software vulnerabilities. Secunia found that over 83 percent of 15,435 vulnerabilities found in 3,870 applications had a patch available when a flaw was publicly disclosed. The company also looked at vulnerabilities in open-source software, an increasing security concern after several serious vulnerabilities were found in the OpenSSL cryptographic software.”]
Source: https://www.csoonline.com/article/2901895/zero-day-web-browser-vulnerabilities-spike-in-2014.html