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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.013 (70.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: +0.000
Affected products
- Siemens Simatic Easie Core Package — versions All versions < V22.00
- Siemens Simatic Easie Core Package
Weakness classification (CWE)
References
- cert-portal.siemens.com/productcert/pdf/ssa-580125.pdf (Patch, 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.