Multiple Honeywell Products CVE-2019-18230 Unauthorized Access Vulnerability



Date Discovered

September 4, 2019


Multiple Honeywell Products are prone to an unauthorized-access vulnerability. Attackers can exploit this issue to gain unauthorized access and perform unauthorized actions. This may aid in further attacks.

Technologies Affected

  • Honeywell H2W2GR1
  • Honeywell H3W2GR1
  • Honeywell H3W2GR1V
  • Honeywell H3W2GR2
  • Honeywell H3W4GR1
  • Honeywell H3W4GR1V
  • Honeywell H4D8GR1
  • Honeywell H4D8PR1
  • Honeywell H4L2GR1
  • Honeywell H4L2GR1V
  • Honeywell H4L6GR2
  • Honeywell H4LGGR2
  • Honeywell H4W2GR1
  • Honeywell H4W2GR1V
  • Honeywell H4W2GR2
  • Honeywell H4W4GR1
  • Honeywell H4W4GR1V
  • Honeywell HBD8GR1
  • Honeywell HBL2GR1
  • Honeywell HBL2GR1V
  • Honeywell HBW2GR1
  • Honeywell HBW2GR1V
  • Honeywell HBW2GR3
  • Honeywell HBW2GR3V
  • Honeywell HBW4GR1
  • Honeywell HBW4GR1V
  • Honeywell HCD8G
  • Honeywell HCL2G
  • Honeywell HCL2GV
  • Honeywell HCW2G
  • Honeywell HCW2GV
  • Honeywell HCW4G
  • Honeywell HDZ302D
  • Honeywell HDZ302DE
  • Honeywell HDZ302DIN
  • Honeywell HDZ302DIN-C1
  • Honeywell HDZ302DIN-S1
  • Honeywell HDZ302LIK
  • Honeywell HDZ302LIW
  • Honeywell HDZP252DI
  • Honeywell HDZP304DI
  • Honeywell HFD5PR1
  • Honeywell HFD6GR1
  • Honeywell HFD8GR1
  • Honeywell HM4L8GR1
  • Honeywell HMBL8GR1
  • Honeywell HPW2P1


Block external access at the network boundary, unless external parties require service.
Allow only trusted computers and networks access. Block all other access to the server if possible.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This may indicate exploit attempts or activity that results from successful exploits.

Updates are available. Please see the references or vendor advisory for more information.




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