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CVE-2018-0150

CRITICAL

A vulnerability in Cisco IOS XE Software could allow an unauthenticated, remote attacker to log in to a device running an affected release of Cisco IOS XE Software with the default username and password that are used at initial boot, aka a Static Credential Vulnerability. The vulnerability is due to an undocumented user account with privilege level 15 that has a default username and password. An attacker could exploit this vulnerability by using this account to remotely connect to an affected device. A successful exploit could allow the attacker to log in to the device with privilege level 15 access. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS XE Software Release 16.x. This vulnerability does not affect Cisco IOS XE Software releases prior to Release 16.x. Cisco Bug IDs: CSCve89880.

Published: Mar 28, 2018 Modified: Jun 17, 2026
CWE-798 CWE-798

CVSS Metrics

CVSSv3
Attack Vector: NETWORK Attack Complexity: LOW Privileges Required: NONE User Interaction: NONE Scope: UNCHANGED Confidentiality Impact: HIGH Integrity Impact: HIGH Availability Impact: HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products (1)

Vendor Product Version
cisco ios_xe 16.5.1

GitHub Security Advisory GHSA-wpq9-4577-qx62

A vulnerability in Cisco IOS XE Software could allow an unauthenticated, remote attacker to log...

Risk Scores

CVSS Score 9.8 / 10
EPSS Score 4.82%

Top 9% most likely to be exploited

Threat Score 40.6 / 100

Data Sources

NVD EPSS GitHub