Lack of rate limiting in M-Files Server and M-Files Web products with versions before 21.12.10873.0 in certain type of user accounts allows unlimited amount of attempts and therefore makes brute-forcing login accounts easier.
https://www.m-files.com/about/trust-center/security-vulnerabilities/cve-2021-41807/
https://empower.m-files.com/security-advisories/CVE-2021-41807