CVE-2018-0150

Name: CVE-2018-0150
Creator: NVD / NIST
Published: 2018-03-28T22:29:00.217+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 4.34%

Last modified Jun 17, 2026

CVE-2018-0150 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 4.34% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

4.34%

90.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Cisco	Ios Xe	16.5.1

References

http://www.securityfocus.com/bid/103539Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040579Mitigation, Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-xescMitigation, Vendor Advisory
http://www.securityfocus.com/bid/103539Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040579Mitigation, Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-xescMitigation, Vendor Advisory

Timeline

Published: Mar 28, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-0150?

How severe is CVE-2018-0150?

CVE-2018-0150 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 4.34% probability of exploitation in the next 30 days.

How do I fix CVE-2018-0150?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-0150?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST