CVE-2018-0180

Name: CVE-2018-0180
Creator: NVD / NIST
Published: 2018-03-28T22:29:01.547+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10Actively ExploitedEPSS 5.05%

Last modified Jun 17, 2026

CVE-2018-0180 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. Multiple vulnerabilities in the Login Enhancements (Login Block) feature of Cisco IOS Software could allow an unauthenticated, remote attacker to trigger a reload of an affected system, resulting in a denial of service (DoS) condition. These vulnerabilities affect Cisco devices that are running Cisco IOS Software Release 15.4(2)T, 15.4(3)M, or 15.4(2)CG and later. CISA has confirmed active exploitation in the wild. EPSS estimates a 5.05% chance of exploitation in the next 30 days.

Description

Multiple vulnerabilities in the Login Enhancements (Login Block) feature of Cisco IOS Software could allow an unauthenticated, remote attacker to trigger a reload of an affected system, resulting in a denial of service (DoS) condition. These vulnerabilities affect Cisco devices that are running Cisco IOS Software Release 15.4(2)T, 15.4(3)M, or 15.4(2)CG and later. Cisco Bug IDs: CSCuy32360, CSCuz60599.

Metrics

CVSS 3.1

5.9/10

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

EPSS Probability

5.05%

91.2th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Mar 17, 2022.

Weakness Enumeration

CWE-399

Affected Software

Vendor	Product	Versions
Cisco	Ios	15.3\(00.00.19\)sy
Cisco	Ios	15.4\(01\)ia001.100
Cisco	Ios	15.6\(01.22\)t
Cisco	Ios	15.4\(03\)m4.1
Cisco	Ios	15.4\(2\)cg
Cisco	Ios	15.4\(2\)t
Cisco	Ios	15.4\(3\)m

References

http://www.securityfocus.com/bid/103556Broken Link, Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-sloginMitigation, Vendor Advisory
http://www.securityfocus.com/bid/103556Broken Link, Third Party Advisory, VDB Entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-sloginMitigation, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0180US Government Resource

Timeline

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

Frequently Asked Questions

What is CVE-2018-0180?

How severe is CVE-2018-0180?

CVE-2018-0180 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 5.05% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2018-0180?

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-2018-0180?

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

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Source: NVD / NIST