The Google Chrome 66.0.3359.170 release is here to fix a total of four security vulnerabilities, including a critical one that could lead to sandbox escape, a privilege escalation bug in extensions, a type confusion issue in the V8 JavaScript engine, as well as a heap buffer overflow in the PDFium PDF viewer component. Apart from the security vulnerabilities mentioned above, Chrome 66.0.3359.170 also contains various other fixes from internal audits, fuzzing, as well as other initiatives, thanks to Google’s ongoing internal security work on the Chrome web browser, which is always based on the open-source Chromium project.