CVE-2018-0180VulnerabilityPublished 03/03/2022Updated 10/24/2026

CVE-2018-0180: Cisco IOS Software Denial-of-Service Vulnerability

Affects Cisco IOS SoftwareSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 03/03/2022
KEV deadline: 03/17/2022
EPSS: 4.9% chance of exploitation in 30 days – higher than 92% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2018-0180 (opens in a new tab)

Description

CVE-2018-0180 is a vulnerability in the Login Enhancements (Login Block) feature of Cisco IOS Software that allows an unauthenticated remote attacker to cause a denial of service by triggering a system reload. This vulnerability has been exploited in the wild. No specific affected versions or patch information is provided in the available data.

Summary

This vulnerability affects the Login Enhancements (Login Block) feature in Cisco IOS Software. An unauthenticated remote attacker can exploit this flaw to trigger a reload of the affected system, resulting in a denial of service condition. The vulnerability is identified as CVE-2018-0180 and has been observed in active exploitation scenarios. However, no detailed version information or patch availability is provided in the input data.

Impact

Successful exploitation leads to a denial of service by forcing the affected Cisco IOS device to reload, disrupting network operations. The vulnerability can be exploited remotely without authentication, increasing the risk of impact. It has been confirmed to be exploited in the wild, indicating active threat usage.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch or official fix is confirmed, monitor Cisco advisories for updates and consider applying any recommended temporary mitigations from Cisco.

Weaknesses

CWE-399Unclassified weakness (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 10:41:08 UTC

Weaknesses

References

Related threats