Adobe Flash, Quicktime, Shockwave and Windows Media Player among most vulnerable plug-ins. Java, Adobe Reader and PDF Reader among the most vulnerable utilities. Around 80 percent of browser-related security flaws lie with plug-in, says Qualys CTO Wolfgang Kandek. Google Chrome and mobile operating systems such as Android and iOS are superior, says Kandek, CTO of Qualys. The sheer number of common plug-ings and the difficulty many users found in keeping them patched in a timely way, he says.”]
Source: https://www.csoonline.com/article/2128591/many-browsers-run-insecure-plug-ins–analysis-finds.html