Zero-day attacks' details not disclosed
https://www.bleepingcomputer.com/news/security/google-pushes-emergency-chrome-update-to-fix-two-zero-days/
Google has released Chrome 94.0.4606.71 for Windows, Mac, and Linux, to fix two zero-day vulnerabilities that have been exploited by attackers.
"Google is aware the exploits for CVE-2021-37975 and CVE-2021-37976 exist in the wild," Google disclosed in the list of security fixes fixed in today's Google Chrome release.