What is CVE-2021-44222?

CVE-2021-44222 is a critical-severity vulnerability in Siemens Simatic Easie Core Package, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2022-07-12.

How severe is CVE-2021-44222?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Auth bypass in Siemens Simatic Easie Core Package

CVE-2021-44222

A vulnerability has been identified in SIMATIC eaSie Core Package (All versions < V22.00). The underlying MQTT service of affected systems does not perform authentication in the default configuration. This could allow an unauthenticated remote attacker to send arbitrary messages to the service and thereby issue arbitrary requests in the affected system.

Vulnerability class: Broken Authentication

EPSS: 0.013 (66.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Siemens Simatic Easie Core Package — versions All versions < V22.00
Siemens Simatic_easie_core_package

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

productcert@siemens.com (Patch, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-44222?: CVE-2021-44222 is a critical-severity vulnerability in Siemens Simatic Easie Core Package, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2022-07-12.
How severe is CVE-2021-44222?: Critical severity. CVSS v3 base score is 9.1 out of 10.