// For flags

CVE-2021-34203

 

Severity Score

8.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

D-Link DIR-2640-US 1.01B04 is vulnerable to Incorrect Access Control. Router ac2600 (dir-2640-us), when setting PPPoE, will start quagga process in the way of whole network monitoring, and this function uses the original default password and port. An attacker can easily use telnet to log in, modify routing information, monitor the traffic of all devices under the router, hijack DNS and phishing attacks. In addition, this interface is likely to be questioned by customers as a backdoor, because the interface should not be exposed.

D-Link DIR-2640-US versión 1.01B04 es vulnerable al Control de Acceso Incorrecto. El router ac2600 (dir-2640-us), cuando se configura PPPoE, iniciará el proceso quagga en la manera de monitorización de toda la red, y esta función usa la contraseña y el puerto originales predeterminado. Un atacante puede usar fácilmente telnet para iniciar sesión, modificar la información de enrutamiento, monitorear el tráfico de todos los dispositivos bajo el router, secuestrar el DNS y los ataques de phishing. Además, es probable que esta interfaz sea cuestionada por los clientes como una puerta trasera, ya que la interfaz no debería estar expuesta

*Credits: N/A
CVSS Scores
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Attack Vector
Adjacent
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-06-07 CVE Reserved
  • 2021-06-16 CVE Published
  • 2024-01-21 EPSS Updated
  • 2024-08-04 CVE Updated
  • 2024-08-04 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-1188: Initialization of a Resource with an Insecure Default
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Dlink
Search vendor "Dlink"
 Dir-2640-us Firmware
Search vendor "Dlink" for product "Dir-2640-us Firmware"
 1.01b04
Search vendor "Dlink" for product "Dir-2640-us Firmware" and version "1.01b04"
-
Affected
in Dlink
Search vendor "Dlink"
 Dir-2640-us
Search vendor "Dlink" for product "Dir-2640-us"
--
Safe