CVE intelligence and bounded remediation

CVE-2018-19021 — Emerson Deltav security vulnerability

Medium CVSS 6.5

A specially crafted script could bypass the authentication of a maintenance port of Emerson DeltaV DCS Versions 11.3.1, 11.3.2, 12.3.1, 13.3.1, 14.3, R5.1, R6 and prior, which may allow an attacker to cause a denial of service.

Severity
Medium
CVSS
6.5 (3.1)
Published
2019-01-25
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-307

Affected products

  • emerson / deltav
  • emerson / deltav / 11.3.1
  • emerson / deltav / 11.3.2
  • emerson / deltav / 12.3.1
  • emerson / deltav / 13.3.1
  • emerson / deltav / 14.3

Matched remediation archetype

Authentication bypass and missing authentication

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.