What is CVE-2022-4126?

CVE-2022-4126 is a critical-severity vulnerability in Abb Rccmd, classified under CWE-1393. CVSS score: 9.6/10. Published 2023-03-27.

How severe is CVE-2022-4126?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Auth bypass in Abb Rccmd

CVE-2022-4126

Use of Default Password vulnerability in ABB RCCMD on Windows, Linux, MacOS allows Try Common or Default Usernames and Passwords.This issue affects RCCMD: before 4.40 230207.

Published 2023-03-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (48.7th percentile), scored 2026-10-18.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Weakness classification (CWE)

References

search.abb.com/library/Download.aspx (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2022-4126?: CVE-2022-4126 is a critical-severity vulnerability in Abb Rccmd, classified under CWE-1393. CVSS score: 9.6/10. Published 2023-03-27.
How severe is CVE-2022-4126?: Critical severity. CVSS v3 base score is 9.6 out of 10.