Cisco Device Default Password

Critical Nessus Plugin ID 23938


The remote device has a default factory password set.


The remote Cisco router has a default password set. A remote, unauthenticated attacker can exploit this to gain administrative access.


Change the Cisco device default password via the command 'enable secret'.

Plugin Details

Severity: Critical

ID: 23938

File Name: cisco_default_pw.nasl

Version: 1.47

Type: remote

Family: CISCO

Published: 2006/12/23

Updated: 2020/09/02

Dependencies: 12634, 11153

Risk Information

Risk Factor: Critical

CVSS Score Source: CVE-1999-0508

CVSS Score Rationale: Av:n is justified since the plugin tries to login via ssh or telnet. while the nvd score implies the the device is only accessible locally, that's not explicitly specified in the cve description: an account on a router, firewall, or other network device has a default, null, blank, or missing password. it is a reasonable assumption that if the plugin can log in with one of the sets of credentials attempted in the plugin, it can own the device (hence cia complete instead of partial).

CVSS v2.0

Base Score: 10

Temporal Score: 7.7

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

Temporal Vector: CVSS2#E:U/RL:TF/RC:C

CVSS v3.0

Base Score: 9.8

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

Vulnerability Information

CPE: cpe:/o:cisco

Excluded KB Items: global_settings/supplied_logins_only

Exploit Available: false

Exploit Ease: No exploit is required

Vulnerability Publication Date: 1999/01/01

Reference Information

CVE: CVE-1999-0508