Core Security Technologies Advisory - HP Openview Network Node Manager is one of the most widely-deployed network monitoring and management platforms used throughout enterprise organizations today. The platform includes many server and client-side core components with a long list of previously disclosed security bugs. In this case, a remotely exploitable vulnerability was found in the database server core component used by NNM. Exploitation of the bug does not require authentication and will lead to a remotely triggered denial of service of the internal database service. HP Openview NNM version 7.53 is affected.