// For flags

CVE-2021-40120

Cisco Small Business RV Series Routers Command Injection Vulnerability

Severity Score

7.2
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

A vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an authenticated, remote attacker with administrative privileges to inject arbitrary commands into the underlying operating system and execute them using root-level privileges. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending malicious input to a specific field in the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying Linux operating system as a user with root-level privileges.

Una vulnerabilidad en la interfaz de administración basada en la web de algunos routers de la serie RV de Cisco Small Business podría permitir a un atacante remoto autenticado con privilegios administrativos inyectar comandos arbitrarios en el sistema operativo subyacente y ejecutarlos usando privilegios de nivel de root. Esta vulnerabilidad es debido a que no se comprueba suficientemente la entrada proporcionada por el usuario. Un atacante podría explotar esta vulnerabilidad mediante el envío de una entrada maliciosa a un campo específico de la interfaz de administración basada en la web de un dispositivo afectado. Una explotación con éxito podría permitir al atacante ejecutar comandos arbitrarios en el sistema operativo Linux subyacente como un usuario con privilegios de nivel de root

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
None
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2021-08-25 CVE Reserved
  • 2021-11-04 CVE Published
  • 2024-01-27 EPSS Updated
  • 2024-11-07 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
  • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Cisco
Search vendor "Cisco"
 Ios Xr
Search vendor "Cisco" for product "Ios Xr"
 4.2.3.06
Search vendor "Cisco" for product "Ios Xr" and version "4.2.3.06"
-
Affected
in Cisco
Search vendor "Cisco"
 Rv016
Search vendor "Cisco" for product "Rv016"
--
Safe
Cisco
Search vendor "Cisco"
 Ios Xr
Search vendor "Cisco" for product "Ios Xr"
 4.2.3.06
Search vendor "Cisco" for product "Ios Xr" and version "4.2.3.06"
-
Affected
in Cisco
Search vendor "Cisco"
 Rv042
Search vendor "Cisco" for product "Rv042"
--
Safe
Cisco
Search vendor "Cisco"
 Ios Xr
Search vendor "Cisco" for product "Ios Xr"
 4.2.3.06
Search vendor "Cisco" for product "Ios Xr" and version "4.2.3.06"
-
Affected
in Cisco
Search vendor "Cisco"
 Rv042g
Search vendor "Cisco" for product "Rv042g"
--
Safe
Cisco
Search vendor "Cisco"
 Ios Xr
Search vendor "Cisco" for product "Ios Xr"
 4.2.3.06
Search vendor "Cisco" for product "Ios Xr" and version "4.2.3.06"
-
Affected
in Cisco
Search vendor "Cisco"
 Rv082
Search vendor "Cisco" for product "Rv082"
--
Safe
Cisco
Search vendor "Cisco"
 Ios Xr
Search vendor "Cisco" for product "Ios Xr"
 4.2.3.06
Search vendor "Cisco" for product "Ios Xr" and version "4.2.3.06"
-
Affected
in Cisco
Search vendor "Cisco"
 Rv320
Search vendor "Cisco" for product "Rv320"
--
Safe
Cisco
Search vendor "Cisco"
 Ios Xr
Search vendor "Cisco" for product "Ios Xr"
 4.2.3.06
Search vendor "Cisco" for product "Ios Xr" and version "4.2.3.06"
-
Affected
in Cisco
Search vendor "Cisco"
 Rv325
Search vendor "Cisco" for product "Rv325"
--
Safe
Cisco
Search vendor "Cisco"
 Application Extension Platform
Search vendor "Cisco" for product "Application Extension Platform"
 1.5.1.13
Search vendor "Cisco" for product "Application Extension Platform" and version "1.5.1.13"
-
Affected