Yesterday HP released firmware to address critical threats that cover popular LaserJet printer & MFP models. The threats have CVSS scores of 7.5, 8.4, and 9.8. If these patches are not applied, you may be leaving your printers vulnerable to information disclosure, denial of service, or remote code execution.
In certain HP Enterprise and HP LaserJet Pro printers, one of the threats can be mitigated by disabling LLMNR in network settings.
See below links for details on the threat, how to access the firmware update and instructions on disabling LLMNR:
https://support.hp.com/us-en/document/ish_5948778-5949142-16/hpsbpi03780
If you find yourself without a strategy for print security and/or falling behind on upgrading printer firmware (or not doing it at all!) our team can help! We can run an HP Security Manager quick assessment and analyze your printers to see where you need to upgrade the firmware. Reach out to us below today: Schedule a Conversation with one of our Printer/Copier Solutions Experts