Details regarding ongoing attacks not disclosed
https://www.bleepingcomputer.com/news/security/emergency-google-chrome-update-fixes-zero-day-exploited-in-the-wild/
Google has released Chrome 94.0.4606.61 for Windows, Mac, and Linux, an emergency update addressing a high-severity zero-day vulnerability exploited in the wild.
"Google is aware that an exploit for CVE-2021-37973 exists in the wild," the browser vendor revealed in today's security advisory.