https://www.bleepingcomputer.com/news/security/cybersecurity-agencies-reveal-top-exploited-vulnerabilities-of-2021/

In partnership with the NSA and the FBI, cybersecurity authorities worldwide have released today a list of the top 15 vulnerabilities routinely exploited by threat actors during 2021.

The cybersecurity authorities urged organizations in a joint advisory to promptly patch these security flaws and implement patch management systems to reduce their attack surface.