9.8
CRITICAL
CVE-2023-49251
Siemens SIMATIC CN 4100 Root RCE via Authentication Bypass
Description

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7). The "intermediate installation" system state of the affected application allows an attacker to add their own login credentials to the device. This allows an attacker to remotely login as root and take control of the device even after the affected device is fully set up.

INFO

Published Date :

Jan. 9, 2024, 10:15 a.m.

Last Modified :

Jan. 12, 2024, 3:37 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2023-49251 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_cn_4100
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-2023-49251.

URL Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-777015.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-2023-49251 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-49251 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]

    Jan. 12, 2024

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-777015.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-777015.pdf Patch, Vendor Advisory
    Added CPE Configuration OR *cpe:2.3:a:siemens:simatic_cn_4100:*:*:*:*:*:*:*:* versions up to (excluding) 2.7
  • CVE Received by [email protected]

    Jan. 09, 2024

    Action Type Old Value New Value
    Added Description A vulnerability has been identified in SIMATIC CN 4100 (All versions < V2.7). The "intermediate installation" system state of the affected application allows an attacker to add their own login credentials to the device. This allows an attacker to remotely login as root and take control of the device even after the affected device is fully set up.
    Added Reference Siemens AG https://cert-portal.siemens.com/productcert/pdf/ssa-777015.pdf [No types assigned]
    Added CWE Siemens AG CWE-639
    Added CVSS V3.1 Siemens AG AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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-2023-49251 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-49251 weaknesses.

Exploit Prediction

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

0.08 }} 0.03%

score

0.31827

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability