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Vulnerabilities

Vulnerability · CVE-2018-0180

Cisco IOS Software Denial-of-Service Vulnerability

Published Mar 28, 2018 · catalog updated Jun 16, 2026 · Cisco IOS

Patch now

CVE-2018-0180 is in the CISA known-exploited catalog, due Mar 17, 2022. Confirm Cisco IOS against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Medium5.9
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
4.93%
Remediation
Remediation guidance
Affected products
cpe cisco/ios · vendor Cisco IOS · vendor Cisco IOS Software

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe cisco/ios15.3\(00.00.19\)sy
  • cpe cisco/ios15.4\(01\)ia001.100
  • cpe cisco/ios15.4\(03\)m4.1
  • cpe cisco/ios15.4\(2\)cg
  • cpe cisco/ios15.4\(2\)t
  • cpe cisco/ios15.4\(3\)m
  • cpe cisco/ios15.6\(01.22\)t
  • vendor Cisco IOSversion unspecified
  • vendor Cisco IOS Softwareversion unspecified

How to fix CVE-2018-0180

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2018-0180 is in the CISA known-exploited catalog, due Mar 17, 2022. Confirm Cisco IOS against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with 15.3\(00.00.19\)sy, 15.4\(01\)ia001.100, 15.4\(03\)m4.1, 15.4\(2\)cg, 15.4\(2\)t, 15.4\(3\)m. Apply updates per vendor instructions.

What should an analyst verify?

CWE-399. EPSS 4.93%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Cisco security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 28, 2018 · Catalog

    Detected

    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, CSCuz6

  2. Mar 3, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Mar 17, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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, CSCuz6

Sources

  • CISA KEVConfirmed exploitationCVE-2018-0180

    A vulnerability 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.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2018-0180

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2018-0180

    30-day exploitation probability 4.9%

    first.org
  • NIST NVDVulnerability recordCVE-2018-0180

    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 t

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2018-0180

    A vulnerability 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.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.