CISA KEV · Known exploitedMedium

CVE-2018-0180

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.

CVSS: 5.9
EPSS: 4.97%
CISA KEV: Listed
Published: 2018.03.29

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability4.97%

Technical severityCVSS 5.9

Vulnerability overview

Affected product and versions

Product: Cisco IOS Software
Affected versions: Cisco IOS, 15.3(00.00.19)sy, 15.4(01)ia001.100, 15.6(01.22)t, 15.4(03)m4.1, 15.4(2)cg, 15.4(2)t, 15.4(3)m
Fixed versions: No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2022.03.17

1
Identify
Confirm that Cisco IOS Software and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE: CWE-399
KEV added: 2022.03.03
Ransomware use: 미확인