CVE-2021-44222: Siemens SIMATIC Easie Core Package

Critical severity, CVSS 9.1. EPSS: 1.3% chance of exploitation in the next 30 days.

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.

Affected products

• Siemens SIMATIC Easie Core Package: before 22.00 (fixed in 22.00)

Published 2022-07-12. Last modified 2026-06-17.