While the three zero-days are all different from each other, Google did not clarify if all zero-days are exploited by the same hacking group.
Late last month, a team of Google security researchers revealed a zero-day vulnerability in the Microsoft Windows operating system that is under active exploitation.
According to Google project Zero technical lead Ben Hawkes, the zero-day vulnerability is expected to be patched on 10 November.
The zero-day bug in the Windows kernel can be exploited to elevate an attacker’s code with additional permissions.
A Zero-Day (also known as 0-day) vulnerability is a computer-software vulnerability that is unknown to those who should be interested in mitigating the vulnerability (including the vendor of the target software).