The login page of Revive Adserver v5.4.1 is vulnerable to brute force attacks. NOTE: The vendor's position is that this is effectively mitigated by rate limits and password-quality features.
https://www.revive-adserver.com/security/response-to-cve-2023-26756/
https://www.esecforte.com/login-page-brute-force-attack/
https://googleinformationsworld.blogspot.com/2023/04/revive-adserver-541-vulnerable-to-brute.html