// For flags

CVE-2021-1289

Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers Remote Code Execution Vulnerabilities

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

Multiple vulnerabilities in the web-based management interface of Cisco Small Business RV160, RV160W, RV260, RV260P, and RV260W VPN Routers could allow an unauthenticated, remote attacker to execute arbitrary code as the root user on an affected device. These vulnerabilities exist because HTTP requests are not properly validated. An attacker could exploit these vulnerabilities by sending a crafted HTTP request to the web-based management interface of an affected device. A successful exploit could allow the attacker to remotely execute arbitrary code on the device.

Múltiples vulnerabilidades en la interfaz de administración basada en web de los Enrutadores VPN Cisco Small Business RV160, RV160W, RV260, RV260P y RV260W, podrían permitir a un atacante remoto no autenticado ejecutar código arbitrario como usuario root en un dispositivo afectado. Estas vulnerabilidades se presentan porque las peticiones HTTP no son comprobadas apropiadamente. Un atacante podría explotar estas vulnerabilidades mediante el envío de una petición HTTP diseñada hacia la interfaz de administración basada en web de un dispositivo afectado. Una explotación con éxito podría permitir al atacante ejecutar código arbitrario remotamente en el dispositivo

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Cisco RV16x and RV26x routers. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the web service, which listens on TCP port 443 by default. When parsing the Authorization header, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root.

*Credits: T Shiomitsu
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2020-11-13 CVE Reserved
  • 2021-02-04 CVE Published
  • 2024-03-22 EPSS Updated
  • 2024-11-12 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-472: External Control of Assumed-Immutable Web Parameter
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"
Rv160w Wireless-ac Vpn Router Firmware
Search vendor "Cisco" for product "Rv160w Wireless-ac Vpn Router Firmware"
< 1.0.01.02
Search vendor "Cisco" for product "Rv160w Wireless-ac Vpn Router Firmware" and version " < 1.0.01.02"
-
Affected
in Cisco
Search vendor "Cisco"
Rv160w Wireless-ac Vpn Router
Search vendor "Cisco" for product "Rv160w Wireless-ac Vpn Router"
--
Safe
Cisco
Search vendor "Cisco"
Rv260 Vpn Router Firmware
Search vendor "Cisco" for product "Rv260 Vpn Router Firmware"
< 1.0.01.02
Search vendor "Cisco" for product "Rv260 Vpn Router Firmware" and version " < 1.0.01.02"
-
Affected
in Cisco
Search vendor "Cisco"
Rv260 Vpn Router
Search vendor "Cisco" for product "Rv260 Vpn Router"
--
Safe
Cisco
Search vendor "Cisco"
Rv260p Vpn Router With Poe Firmware
Search vendor "Cisco" for product "Rv260p Vpn Router With Poe Firmware"
< 1.0.01.02
Search vendor "Cisco" for product "Rv260p Vpn Router With Poe Firmware" and version " < 1.0.01.02"
-
Affected
in Cisco
Search vendor "Cisco"
Rv260p Vpn Router With Poe
Search vendor "Cisco" for product "Rv260p Vpn Router With Poe"
--
Safe
Cisco
Search vendor "Cisco"
Rv260w Wireless-ac Vpn Router Firmware
Search vendor "Cisco" for product "Rv260w Wireless-ac Vpn Router Firmware"
< 1.0.01.02
Search vendor "Cisco" for product "Rv260w Wireless-ac Vpn Router Firmware" and version " < 1.0.01.02"
-
Affected
in Cisco
Search vendor "Cisco"
Rv260w Wireless-ac Vpn Router
Search vendor "Cisco" for product "Rv260w Wireless-ac Vpn Router"
--
Safe
Cisco
Search vendor "Cisco"
Rv160 Vpn Router Firmware
Search vendor "Cisco" for product "Rv160 Vpn Router Firmware"
< 1.0.01.02
Search vendor "Cisco" for product "Rv160 Vpn Router Firmware" and version " < 1.0.01.02"
-
Affected
in Cisco
Search vendor "Cisco"
Rv160 Vpn Router
Search vendor "Cisco" for product "Rv160 Vpn Router"
--
Safe