Adobe Systems has released new versions of Flash Player to fix 18 critical vulnerabilities. One vulnerability is being used in limited, targeted attacks, Adobe says. Flash Player vulnerabilities are a common target for Web-based, drive-by download exploits. Adobe advises users to upgrade their Flash Player installations to version 21.0.182 for Windows or Mac and version 11.2.202.577 for Linux. The Flash Player plug-ins bundled with Google Chrome, Internet Explorer and Microsoft Edge will automatically be updated.”]