Certain HP DeskJet All-in-One printers may be potentially vulnerable to information disclosure that allows an unauthenticated attacker to access sensitive information through exposed APIs.

A missing authorization vulnerability exists in the embedded webserver of HP Deskjet 2800 Series Printers running firmware version <=TBP1CN2612AR. An unauthenticated attacker with network access can send GET requests to multiple exposed administrative API endpoints and retrieve sensitive configuration data such as plaintext Wi‑Fi Direct credentials, unique device identity information, and other administrative security state details. When accessed through the web interface, these setting pages explicitly require administrator credentials before sensitive information is displayed.