9.1
CRITICAL
CVE-2021-44222
"Siemens SIMATIC eaSie MQTT Authentication Bypass"
Description

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.

INFO

Published Date :

July 12, 2022, 10:15 a.m.

Last Modified :

July 15, 2022, 7:01 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.2

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-44222 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Siemens simatic_easie_core_package
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-44222.

URL Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-580125.pdf Patch Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-44222 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-44222 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    Jul. 15, 2022

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-580125.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-580125.pdf Patch, Vendor Advisory
    Added CWE NIST CWE-306
    Added CPE Configuration OR *cpe:2.3:a:siemens:simatic_easie_core_package:*:*:*:*:*:*:*:* versions up to (excluding) 22.00
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-44222 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.26 }} 0.02%

score

0.66141

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
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Scope
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