Microsoft has issued 13 security bulletins that addresses 48 security vulnerabilities in many of their products. Adobe has also pushed a massive security update to fix a total of 52 vulnerabilities in its Flash Player, Reader, AIR and Acrobat software. Mozilla has fixed 13 security flaws in its latest stable release of Firefox 38, including five critical flaws. The affected products include Internet Explorer (IE), current versions of Windows (and its components), Office, Office, SharePoint Server, Silverlight and theNET Framework as well.
Source: https://thehackernews.com/2015/05/microsoft-adobe-mozilla-update.html