What is CVE-2021-44463?

CVE-2021-44463 is a high-severity vulnerability in Emerson Deltav, classified under Uncontrolled Search Path Element. CVSS score: 8.1/10. Published 2022-01-28.

How severe is CVE-2021-44463?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Emerson Deltav

CVE-2021-44463

Missing DLLs, if replaced by an insider, could allow an attacker to achieve local privilege escalation on the DeltaV Distributed Control System Controllers and Workstations (All versions) when some DeltaV services are started.

Published 2022-01-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (16.3th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Emerson Deltav — versions 13.3.1, 14, 14.3.1

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

References

www.cisa.gov/uscert/ics/advisories/icsa-21-355-04 (US Government Resource, Third Party Advisory, Mitigation)

Frequently asked questions

What is CVE-2021-44463?: CVE-2021-44463 is a high-severity vulnerability in Emerson Deltav, classified under Uncontrolled Search Path Element. CVSS score: 8.1/10. Published 2022-01-28.
How severe is CVE-2021-44463?: High severity. CVSS v3 base score is 8.1 out of 10.