CVE-2018-0179

KEVCisco IOS Software Denial-of-Service Vulnerability

Description

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.

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.

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

PublishedMar 28, 2018

Last modifiedJun 17, 2026

Added to KEVMar 3, 2022

Remediation dueMar 17, 2022

References

securityfocus.com/bid/103556Broken LinkThird Party Advisory
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-sloginVendor Advisory
cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0179US Government Resource

0 recent articles mention this CVE

Risk assessment · High

Actively exploited. Patch immediately.

Exploitation: Confirmed in the wild (CISA KEV)
Federal remediation deadline: Overdue by 1685 days
CVSS: 5.9 MEDIUM
EPSS (30-day exploit probability): 4.9% · top 8% of all CVEs
Weakness: CWE-399
Attack vector: Network, remotely reachable
Preconditions: No privileges and no user interaction

Recommended actions

1.Apply updates per vendor instructions.
2.Treat as emergency change: patch or isolate internet-facing instances first.
3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.

Assessment is derived automatically from the live signals above; verify against your own asset inventory.