// For flags

CVE-2024-26001

PHOENIX CONTACT: Out of bounds write only memory access

Severity Score

7.4
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

An unauthenticated remote attacker can write memory out of bounds due to improper input validation in the MQTT stack. The brute force attack is not always successful because of memory randomization.

Un atacante remoto no autenticado puede escribir memoria fuera de los límites debido a una validación de entrada incorrecta en la pila MQTT. El ataque de fuerza bruta no siempre tiene éxito debido a la aleatorización de la memoria.

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Phoenix Contact CHARX SEC-3100 devices. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of JSON-encoded arrays. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a buffer. An attacker can leverage this vulnerability to execute code in the context of the charx-ea user.

*Credits: Peter Geissler, Rick De Jager, Carlo Meijer
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Attack Vector
Adjacent
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-02-14 CVE Reserved
  • 2024-03-12 CVE Published
  • 2024-06-24 EPSS Updated
  • 2024-08-01 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
PHOENIX CONTACT
Search vendor "PHOENIX CONTACT"
 CHARX SEC-3000
Search vendor "PHOENIX CONTACT" for product "CHARX SEC-3000"
 <= 1.5.0
Search vendor "PHOENIX CONTACT" for product "CHARX SEC-3000" and version " <= 1.5.0"
en
Affected
PHOENIX CONTACT
Search vendor "PHOENIX CONTACT"
 CHARX SEC-3050
Search vendor "PHOENIX CONTACT" for product "CHARX SEC-3050"
 <= 1.5.0
Search vendor "PHOENIX CONTACT" for product "CHARX SEC-3050" and version " <= 1.5.0"
en
Affected
PHOENIX CONTACT
Search vendor "PHOENIX CONTACT"
 CHARX SEC-3100
Search vendor "PHOENIX CONTACT" for product "CHARX SEC-3100"
 <= 1.5.0
Search vendor "PHOENIX CONTACT" for product "CHARX SEC-3100" and version " <= 1.5.0"
en
Affected
PHOENIX CONTACT
Search vendor "PHOENIX CONTACT"
 CHARX SEC-3150
Search vendor "PHOENIX CONTACT" for product "CHARX SEC-3150"
 <= 1.5.0
Search vendor "PHOENIX CONTACT" for product "CHARX SEC-3150" and version " <= 1.5.0"
en
Affected