// For flags

CVE-2020-3161

Cisco IP Phones Web Server Remote Code Execution and Denial-of-Service Vulnerability

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

3
*Multiple Sources

Exploited in Wild

Yes
*KEV

Decision

-
*SSVC
Descriptions

A vulnerability in the web server for Cisco IP Phones could allow an unauthenticated, remote attacker to execute code with root privileges or cause a reload of an affected IP phone, resulting in a denial of service (DoS) condition. The vulnerability is due to a lack of proper input validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web server of a targeted device. A successful exploit could allow the attacker to remotely execute code with root privileges or cause a reload of an affected IP phone, resulting in a DoS condition.

Una vulnerabilidad en el servidor web de Cisco IP Phones, podría permitir a un atacante no autenticado remoto ejecutar código con privilegios root o causar una recarga de un teléfono IP afectado, resultando en una condición de denegación de servicio (DoS). La vulnerabilidad es debido a una falta de comprobación de entrada apropiada de las peticiones HTTP. Un atacante podría explotar esta vulnerabilidad mediante el envío de una petición HTTP diseñada al servidor web de un dispositivo apuntado. Una explotación con éxito podría permitir a un atacante ejecutar código remotamente con privilegios root o causar una recarga de un teléfono IP afectado, resultando en una condición DoS.

Cisco IP Phones contain an improper input validation vulnerability for HTTP requests. Exploitation could allow an attacker to execute code remotely with root privileges or cause a denial-of-service (DoS) condition.

*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
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-12-12 CVE Reserved
  • 2020-04-15 CVE Published
  • 2020-04-17 First Exploit
  • 2021-11-03 Exploited in Wild
  • 2022-05-03 KEV Due Date
  • 2024-09-11 EPSS Updated
  • 2024-09-16 CVE Updated
CWE
  • CWE-20: Improper Input Validation
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"
Ip Phone 8865 Firmware
Search vendor "Cisco" for product "Ip Phone 8865 Firmware"
10.3\(1\)es14
Search vendor "Cisco" for product "Ip Phone 8865 Firmware" and version "10.3\(1\)es14"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8865
Search vendor "Cisco" for product "Ip Phone 8865"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8865 Firmware
Search vendor "Cisco" for product "Ip Phone 8865 Firmware"
11.0\(1\)
Search vendor "Cisco" for product "Ip Phone 8865 Firmware" and version "11.0\(1\)"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8865
Search vendor "Cisco" for product "Ip Phone 8865"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8865 Firmware
Search vendor "Cisco" for product "Ip Phone 8865 Firmware"
11.0\(5\)sr1
Search vendor "Cisco" for product "Ip Phone 8865 Firmware" and version "11.0\(5\)sr1"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8865
Search vendor "Cisco" for product "Ip Phone 8865"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8851 Firmware
Search vendor "Cisco" for product "Ip Phone 8851 Firmware"
10.3\(1\)es14
Search vendor "Cisco" for product "Ip Phone 8851 Firmware" and version "10.3\(1\)es14"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8851
Search vendor "Cisco" for product "Ip Phone 8851"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8851 Firmware
Search vendor "Cisco" for product "Ip Phone 8851 Firmware"
11.0\(1\)
Search vendor "Cisco" for product "Ip Phone 8851 Firmware" and version "11.0\(1\)"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8851
Search vendor "Cisco" for product "Ip Phone 8851"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8851 Firmware
Search vendor "Cisco" for product "Ip Phone 8851 Firmware"
11.0\(5\)sr1
Search vendor "Cisco" for product "Ip Phone 8851 Firmware" and version "11.0\(5\)sr1"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8851
Search vendor "Cisco" for product "Ip Phone 8851"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 7841 Firmware
Search vendor "Cisco" for product "Ip Phone 7841 Firmware"
11.0\(1\)
Search vendor "Cisco" for product "Ip Phone 7841 Firmware" and version "11.0\(1\)"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 7841
Search vendor "Cisco" for product "Ip Phone 7841"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 7821 Firmware
Search vendor "Cisco" for product "Ip Phone 7821 Firmware"
11.0\(1\)
Search vendor "Cisco" for product "Ip Phone 7821 Firmware" and version "11.0\(1\)"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 7821
Search vendor "Cisco" for product "Ip Phone 7821"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8811 Firmware
Search vendor "Cisco" for product "Ip Phone 8811 Firmware"
10.3\(1\)es14
Search vendor "Cisco" for product "Ip Phone 8811 Firmware" and version "10.3\(1\)es14"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8811
Search vendor "Cisco" for product "Ip Phone 8811"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8811 Firmware
Search vendor "Cisco" for product "Ip Phone 8811 Firmware"
11.0\(1\)
Search vendor "Cisco" for product "Ip Phone 8811 Firmware" and version "11.0\(1\)"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8811
Search vendor "Cisco" for product "Ip Phone 8811"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8811 Firmware
Search vendor "Cisco" for product "Ip Phone 8811 Firmware"
11.0\(5\)sr1
Search vendor "Cisco" for product "Ip Phone 8811 Firmware" and version "11.0\(5\)sr1"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8811
Search vendor "Cisco" for product "Ip Phone 8811"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8861 Firmware
Search vendor "Cisco" for product "Ip Phone 8861 Firmware"
10.3\(1\)es14
Search vendor "Cisco" for product "Ip Phone 8861 Firmware" and version "10.3\(1\)es14"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8861
Search vendor "Cisco" for product "Ip Phone 8861"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8861 Firmware
Search vendor "Cisco" for product "Ip Phone 8861 Firmware"
11.0\(1\)
Search vendor "Cisco" for product "Ip Phone 8861 Firmware" and version "11.0\(1\)"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8861
Search vendor "Cisco" for product "Ip Phone 8861"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8861 Firmware
Search vendor "Cisco" for product "Ip Phone 8861 Firmware"
11.0\(5\)sr1
Search vendor "Cisco" for product "Ip Phone 8861 Firmware" and version "11.0\(5\)sr1"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8861
Search vendor "Cisco" for product "Ip Phone 8861"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8845 Firmware
Search vendor "Cisco" for product "Ip Phone 8845 Firmware"
10.3\(1\)es14
Search vendor "Cisco" for product "Ip Phone 8845 Firmware" and version "10.3\(1\)es14"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8845
Search vendor "Cisco" for product "Ip Phone 8845"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8845 Firmware
Search vendor "Cisco" for product "Ip Phone 8845 Firmware"
11.0\(1\)
Search vendor "Cisco" for product "Ip Phone 8845 Firmware" and version "11.0\(1\)"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8845
Search vendor "Cisco" for product "Ip Phone 8845"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8845 Firmware
Search vendor "Cisco" for product "Ip Phone 8845 Firmware"
11.0\(5\)sr1
Search vendor "Cisco" for product "Ip Phone 8845 Firmware" and version "11.0\(5\)sr1"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8845
Search vendor "Cisco" for product "Ip Phone 8845"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 7861 Firmware
Search vendor "Cisco" for product "Ip Phone 7861 Firmware"
11.0\(1\)
Search vendor "Cisco" for product "Ip Phone 7861 Firmware" and version "11.0\(1\)"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 7861
Search vendor "Cisco" for product "Ip Phone 7861"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8841 Firmware
Search vendor "Cisco" for product "Ip Phone 8841 Firmware"
10.3\(1\)es14
Search vendor "Cisco" for product "Ip Phone 8841 Firmware" and version "10.3\(1\)es14"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8841
Search vendor "Cisco" for product "Ip Phone 8841"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8841 Firmware
Search vendor "Cisco" for product "Ip Phone 8841 Firmware"
11.0\(1\)
Search vendor "Cisco" for product "Ip Phone 8841 Firmware" and version "11.0\(1\)"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8841
Search vendor "Cisco" for product "Ip Phone 8841"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8841 Firmware
Search vendor "Cisco" for product "Ip Phone 8841 Firmware"
11.0\(5\)sr1
Search vendor "Cisco" for product "Ip Phone 8841 Firmware" and version "11.0\(5\)sr1"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8841
Search vendor "Cisco" for product "Ip Phone 8841"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 7811 Firmware
Search vendor "Cisco" for product "Ip Phone 7811 Firmware"
11.0\(1\)
Search vendor "Cisco" for product "Ip Phone 7811 Firmware" and version "11.0\(1\)"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 7811
Search vendor "Cisco" for product "Ip Phone 7811"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8821 Firmware
Search vendor "Cisco" for product "Ip Phone 8821 Firmware"
10.3\(1\)es14
Search vendor "Cisco" for product "Ip Phone 8821 Firmware" and version "10.3\(1\)es14"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8821
Search vendor "Cisco" for product "Ip Phone 8821"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8821 Firmware
Search vendor "Cisco" for product "Ip Phone 8821 Firmware"
11.0\(1\)
Search vendor "Cisco" for product "Ip Phone 8821 Firmware" and version "11.0\(1\)"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8821
Search vendor "Cisco" for product "Ip Phone 8821"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8821 Firmware
Search vendor "Cisco" for product "Ip Phone 8821 Firmware"
11.0\(5\)sr1
Search vendor "Cisco" for product "Ip Phone 8821 Firmware" and version "11.0\(5\)sr1"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8821
Search vendor "Cisco" for product "Ip Phone 8821"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8821-ex Firmware
Search vendor "Cisco" for product "Ip Phone 8821-ex Firmware"
10.3\(1\)es14
Search vendor "Cisco" for product "Ip Phone 8821-ex Firmware" and version "10.3\(1\)es14"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8821-ex
Search vendor "Cisco" for product "Ip Phone 8821-ex"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8821-ex Firmware
Search vendor "Cisco" for product "Ip Phone 8821-ex Firmware"
11.0\(1\)
Search vendor "Cisco" for product "Ip Phone 8821-ex Firmware" and version "11.0\(1\)"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8821-ex
Search vendor "Cisco" for product "Ip Phone 8821-ex"
--
Safe
Cisco
Search vendor "Cisco"
Ip Phone 8821-ex Firmware
Search vendor "Cisco" for product "Ip Phone 8821-ex Firmware"
11.0\(5\)sr1
Search vendor "Cisco" for product "Ip Phone 8821-ex Firmware" and version "11.0\(5\)sr1"
-
Affected
in Cisco
Search vendor "Cisco"
Ip Phone 8821-ex
Search vendor "Cisco" for product "Ip Phone 8821-ex"
--
Safe
Cisco
Search vendor "Cisco"
8831 Firmware
Search vendor "Cisco" for product "8831 Firmware"
10.3\(1\)es14
Search vendor "Cisco" for product "8831 Firmware" and version "10.3\(1\)es14"
-
Affected
in Cisco
Search vendor "Cisco"
8831
Search vendor "Cisco" for product "8831"
--
Safe
Cisco
Search vendor "Cisco"
8831 Firmware
Search vendor "Cisco" for product "8831 Firmware"
11.0\(1\)
Search vendor "Cisco" for product "8831 Firmware" and version "11.0\(1\)"
-
Affected
in Cisco
Search vendor "Cisco"
8831
Search vendor "Cisco" for product "8831"
--
Safe
Cisco
Search vendor "Cisco"
8831 Firmware
Search vendor "Cisco" for product "8831 Firmware"
11.0\(5\)sr1
Search vendor "Cisco" for product "8831 Firmware" and version "11.0\(5\)sr1"
-
Affected
in Cisco
Search vendor "Cisco"
8831
Search vendor "Cisco" for product "8831"
--
Safe