title: Emerson WirelessHART Gateway
description: There is a flaw in the code used to configure the internal gateway firewall when the gateway's VLAN feature is enabled. If a user enables the VLAN setting, the internal gateway firewall becomes disabled resulting in exposure of all ports used by the gateway.
problem types:  IMPROPER ACCESS CONTROL CWE-284
affected:
{
product: Wireless 1410 Gateway
vendor: Emerson
versions:
lessThanOrEqual: 4.7.84, status: affected, version: 4.6.43, versionType: custom
}
{
product: Wireless 1420 Gateway
vendor: Emerson
versions:
lessThanOrEqual: 4.7.84, status: affected, version: 4.6.43, versionType: custom
}
{
product: Wireless 1552WU Gateway
vendor: Emerson
versions:
lessThanOrEqual: 4.7.84, status: affected, version: 4.6.43, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 10
baseSeverity: CRITICAL
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: NONE
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
version: 3.1
]
solutions: Emerson recommends end users update the firmware on VLAN-enabled Version 4 gateways as soon as possible.
If the VLAN feature is not enabled, no immediate action is necessary.
Please see Emerson’s cybersecurity notification alert number EMR.RMT20001-1 for more information.