Microsoft patched 17 bugs rated critical, with ten tied to scripting engine flaws in Internet Explorer. In total, Microsoft is reporting 53 bugs: 17 critical, 34 important and one low, one moderate. The most severe of the browser bugs are four Chakra scripting engine vulnerabilities. Microsoft s Office was also patched to prevent emails from containing untrusted TrueType fonts that could be used to compromise a targeted system. Adobe also tackled over 100 bugs as part of its monthly bug zapping.
Source: https://threatpost.com/microsoft-fixes-17-critical-bugs-in-july-patch-tuesday-release/133848/