CVE-2021-25676

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A vulnerability has been identified in RUGGEDCOM RM1224 (V6.3), SCALANCE M-800 (V6.3), SCALANCE S615 (V6.3), SCALANCE SC-600 (All Versions >= V2.1 and < V2.1.3). Multiple failed SSH authentication attempts could trigger a temporary Denial-of-Service under certain conditions. When triggered, the device will reboot automatically.

Se ha identificado una vulnerabilidad en RUGGEDCOM RM1224 (versión V6.3), SCALANCE M-800 (versión V6.3), SCALANCE S615 (versión V6.3), SCALANCE SC-600 (Todas las versiones posteriores a V2.1 y anteriores a V2.1.3) . Múltiples intentos fallidos de autenticación SSH podrían desencadenar una Denegación de Servicio temporal en determinadas condiciones. Cuando es desencadenada, el dispositivo se reiniciará automáticamente

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-21 CVE Reserved
2021-03-15 CVE Published
2023-11-29 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-307: Improper Restriction of Excessive Authentication Attempts

CAPEC

References (2)

URL	Tag	Source
https://us-cert.cisa.gov/ics/advisories/icsa-21-068-02	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://cert-portal.siemens.com/productcert/pdf/ssa-296266.pdf	2021-04-20

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Siemens Search vendor "Siemens"	Ruggedcom Rm1224 Firmware Search vendor "Siemens" for product "Ruggedcom Rm1224 Firmware"	6.3 Search vendor "Siemens" for product "Ruggedcom Rm1224 Firmware" and version "6.3"	-	Affected	in	Siemens Search vendor "Siemens"	Ruggedcom Rm1224 Search vendor "Siemens" for product "Ruggedcom Rm1224"	-	-	Safe
Siemens Search vendor "Siemens"	Scalance M-800 Firmware Search vendor "Siemens" for product "Scalance M-800 Firmware"	6.3 Search vendor "Siemens" for product "Scalance M-800 Firmware" and version "6.3"	-	Affected	in	Siemens Search vendor "Siemens"	Scalance M-800 Search vendor "Siemens" for product "Scalance M-800"	-	-	Safe
Siemens Search vendor "Siemens"	Scalance S615 Firmware Search vendor "Siemens" for product "Scalance S615 Firmware"	6.3 Search vendor "Siemens" for product "Scalance S615 Firmware" and version "6.3"	-	Affected	in	Siemens Search vendor "Siemens"	Scalance S615 Search vendor "Siemens" for product "Scalance S615"	-	-	Safe
Siemens Search vendor "Siemens"	Scalance Sc-600 Firmware Search vendor "Siemens" for product "Scalance Sc-600 Firmware"	>= 2.1 < 2.1.3 Search vendor "Siemens" for product "Scalance Sc-600 Firmware" and version " >= 2.1 < 2.1.3"	-	Affected	in	Siemens Search vendor "Siemens"	Scalance Sc-600 Search vendor "Siemens" for product "Scalance Sc-600"	-	-	Safe