// For flags

CVE-2021-31337

 

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The Telnet service of the SIMATIC HMI Comfort Panels system component in affected products does not require authentication, which may allow a remote attacker to gain access to the device if the service is enabled. Telnet is disabled by default on the SINAMICS Medium Voltage Products (SINAMICS SL150: All versions, SINAMICS SM150: All versions, SINAMICS SM150i: All versions).

El servicio Telnet del componente del sistema SIMATIC HMI Comfort Panels en los productos afectados no requiere autenticación, lo que puede permitir a un atacante remoto conseguir acceso al dispositivo si el servicio está habilitado. Telnet está desactivado por defecto en los productos SINAMICS Medium Voltage (SINAMICS SL150: Todas las versiones, SINAMICS SM150: Todas las versiones, SINAMICS SM150i: Todas las versiones)

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-04-15 CVE Reserved
  • 2021-06-28 CVE Published
  • 2024-03-13 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-306: Missing Authentication for Critical Function
CAPEC
References (1)
URL Tag Source
https://us-cert.cisa.gov/ics/advisories/icsa-21-131-04 Not Applicable
URL Date SRC
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Siemens
Search vendor "Siemens"
 Sinamics Sl150 Firmware
Search vendor "Siemens" for product "Sinamics Sl150 Firmware"
*-
Affected
in Siemens
Search vendor "Siemens"
 Sinamics Sl150
Search vendor "Siemens" for product "Sinamics Sl150"
--
Safe
Siemens
Search vendor "Siemens"
 Sinamics Sm150 Firmware
Search vendor "Siemens" for product "Sinamics Sm150 Firmware"
*-
Affected
in Siemens
Search vendor "Siemens"
 Sinamics Sm150
Search vendor "Siemens" for product "Sinamics Sm150"
--
Safe
Siemens
Search vendor "Siemens"
 Sinamics Sm150i Firmware
Search vendor "Siemens" for product "Sinamics Sm150i Firmware"
*-
Affected
in Siemens
Search vendor "Siemens"
 Sinamics Sm150i
Search vendor "Siemens" for product "Sinamics Sm150i"
--
Safe