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Fencer Vulns
critical 10.0

CVE-2020-12030 json

Emerson WirelessHART Gateway

published 2021-09-29 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-4346

cvss
10.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-20-135-02 updated cvss 10.0

Emerson WirelessHART Gateway

  • Emerson Wireless 1410 Gateway >= 4.6.43, <= 4.7.84 Emerson Wireless 1420 Gateway >= 4.6.43, <= 4.7.84 Emerson Wireless 1552WU Gateway >= 4.6.43, <= 4.7.84
    affected: mitigation “Emerson recommends end users update the firmware on VLAN-enabled Version 4 gateways as soon as possible.” emerson.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.13% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • Emerson Wireless 1410 Gateway
  • Emerson Wireless 1420 Gateway
  • Emerson Wireless 1552WU Gateway

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.