Directory Traversal Vulnerability attack on HP LaserJet printer

You see this notification pop up when you have HP LaserJet printers:

"Directory Traversal Vulnerability"

Why did this happen?

Your HP LaserJet printers are vulnerable to directory traversal attacks.

What are its risks?

Attackers could use this vulnerability to obtain confidential information from the device.

What should I do next?

• Always make sure the device firmware is updated. Show me how.
• HP Support suggests you to...
  1. Disable file system access via the PJL interface.
  2. Set a PJL password.

What if I have more questions?

For more information, check out:

• CVE-2010-4107
• HP Customer Support Security Bulletin