Open Dental before version 18.4 installs a mysql database and uses the default credentials of "root" with a blank password. This allows anyone on the network with access to the server to access all database information.

Open Dental before version 18.4 transmits the entire user database over the network when a remote unauthenticated user accesses the command prompt. This allows the attacker to gain access to usernames, password hashes, privilege levels, and more.

Open Dental before version 18.4 stores user passwords as base64 encoded MD5 hashes.

Open Dental 16.1 and earlier has a hardcoded MySQL root password, which allows remote attackers to obtain administrative access by leveraging access to intranet TCP port 3306. NOTE: the vendor disputes this issue, stating that the "vulnerability note ... is factually false ... there is indeed a default blank password, but it can be changed ... We recommend that users change it, each customer receives direction.