What is CVE-2022-2789?

CVE-2022-2789 is a medium-severity vulnerability in Emerson Electric\'s Proficy, classified under Insufficient Verification of Data Authenticity. CVSS score: 4.7/10. Published 2022-08-19.

How severe is CVE-2022-2789?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Vulnerability in Emerson Electric\'s Proficy

CVE-2022-2789

Emerson Electric's Proficy Machine Edition Version 9.00 and prior is vulnerable to CWE-345 Insufficient Verification of Data Authenticity, and can display logic that is different than the compiled logic.

Published 2022-08-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.001 (1.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 1.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Emerson Electric\'s Proficy
Emerson Electric Proficy Machine Edition — versions all

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

References

www.cisa.gov/uscert/ics/advisories/icsa-22-228-06 (US Government Resource, Third Party Advisory)

Frequently asked questions

What is CVE-2022-2789?: CVE-2022-2789 is a medium-severity vulnerability in Emerson Electric\'s Proficy, classified under Insufficient Verification of Data Authenticity. CVSS score: 4.7/10. Published 2022-08-19.
How severe is CVE-2022-2789?: Medium severity. CVSS v3 base score is 4.7 out of 10.