// For flags

CVE-2021-22784

Schneider Electric C-Bus Toolkit Missing Authentication Vulnerability

Severity Score

5.7
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A CWE-306: Missing Authentication for Critical Function vulnerability exists in C-Bus Toolkit v1.15.8 and prior that could allow an attacker to use a crafted webpage to obtain remote access to the system.

A CWE-306: Se presenta una vulnerabilidad de Falta de Autentificación para una Función Crítica en C-Bus Toolkit versiones v1.15.8 y anteriores, que podría permitir a un atacante usar una página web diseñada para obtener acceso remoto al sistema

This vulnerability allows remote attackers to bypass authentication on affected installations of Schneider Electric C-Bus Toolkit. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the C-Gate 2 Service, which listens on TCP port 20023. A crafted webpage can be used to enable remote access. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of SYSTEM.

*Credits: rgod
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
Single
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-01-06 CVE Reserved
  • 2021-07-19 CVE Published
  • 2024-06-12 EPSS Updated
  • 2024-08-03 CVE Updated
  • 2024-08-03 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-306: Missing Authentication for Critical Function
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Schneider-electric
Search vendor "Schneider-electric"
 C-bus Toolkit
Search vendor "Schneider-electric" for product "C-bus Toolkit"
 < 1.15.9
Search vendor "Schneider-electric" for product "C-bus Toolkit" and version " < 1.15.9"
-
Affected