What is CVE-2022-2791?

CVE-2022-2791 is a medium-severity vulnerability in Emerson Proficy, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 5.9/10. Published 2022-11-22.

How severe is CVE-2022-2791?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Arbitrary file upload in Emerson Proficy

CVE-2022-2791

Emerson Electric's Proficy Machine Edition Version 9.00 and prior is vulnerable to CWE-434 Unrestricted Upload of File with Dangerous Type, and will upload any file written into the PLC logic folder to the connected PLC.

Vulnerability class: Unrestricted File Upload

Published 2022-11-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.002 (7.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 7.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Emerson Proficy
Emerson Electric Proficy Machine Edition — versions 0

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

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

Frequently asked questions

What is CVE-2022-2791?: CVE-2022-2791 is a medium-severity vulnerability in Emerson Proficy, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 5.9/10. Published 2022-11-22.
How severe is CVE-2022-2791?: Medium severity. CVSS v3 base score is 5.9 out of 10.