EUVD-2025-209088

When sending invalid base64 SASL data, login process is disconnected from the auth server, causing all active authentication sessions to fail. Invalid BASE64 data can be used to DoS a vulnerable server to break concurrent logins. Install fixed version or disable concurrency in login processes hea...

PT-2025-54917

Name of the Vulnerable Software and Affected Versions Dovecot versions prior to 2.4.3 Description Sending invalid base64 SASL data can disrupt the login process by disconnecting it from the authentication server, leading to the failure of all active authentication sessions. This can be used to...