Cisco NX-OS Software Cisco Discovery Protocol Remote Code Execution Vulnerability (cisco-sa-20200205-nxos-cdp-rce)

high Nessus Plugin ID 133604


The remote device is missing a vendor-supplied security patch


According to its self-reported version, the Cisco NX-OS System Software is affected by a remote code execution vulnerability within the Cisco Discovery Protocol due to improper validation of input. An unauthenticated, adjacent attacker can exploit this to bypass authentication and execute arbitrary commands with root privileges.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.


Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvr09175 and/or CSCvr09531.

See Also

Plugin Details

Severity: High

ID: 133604

File Name: cisco-sa-20200205-nxos-cdp-rce.nasl

Version: 1.9

Type: combined

Family: CISCO

Published: 2/10/2020

Updated: 12/6/2022

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: High

Base Score: 8.3

Temporal Score: 6.1

Vector: CVSS2#AV:A/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2020-3119


Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:nx-os

Required KB Items: Settings/ParanoidReport, Host/Cisco/NX-OS/Version, Host/Cisco/NX-OS/Model, Host/Cisco/NX-OS/Device

Exploit Ease: No known exploits are available

Patch Publication Date: 2/5/2020

Vulnerability Publication Date: 2/5/2020

Reference Information

CVE: CVE-2020-3119

CISCO-SA: cisco-sa-20200205-nxos-cdp-rce

IAVA: 2020-A-0068

CISCO-BUG-ID: CSCvr09175, CSCvr09531