How severe is CVE-2018-0180?

CVE-2018-0180 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-0180 being actively exploited?

Yes. CVE-2018-0180 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-03-03, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2018-0180?

CVE-2018-0180 primarily affects Cisco Ios. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-0180?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2018-0180 have an EU (EUVD) identifier?

Yes. CVE-2018-0180 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-1003. It is also flagged as exploited in the EUVD (since 2022-03-03).

When was CVE-2018-0180 published?

CVE-2018-0180 was published on 2018-03-28 and last updated on 2026-06-17.

CVE-2018-0180

CVE-2018-0180 is a medium-severity vulnerability in Cisco Ios with a CVSS 3.x base score of 5.9. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-03-03). The underlying weakness is classified as CWE-399.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 7.1
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-03-03)
EU (EUVD) id: EUVD-2018-1003
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-03-03)
Weakness: CWE-399
Affected product: Cisco Ios
Published: 2018-03-28
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-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 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.
How severe is CVE-2018-0180?: CVE-2018-0180 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-0180 being actively exploited?: Yes. CVE-2018-0180 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-03-03, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2018-0180?: CVE-2018-0180 primarily affects Cisco Ios. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-0180?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2018-0180 have an EU (EUVD) identifier?: Yes. CVE-2018-0180 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2018-1003. It is also flagged as exploited in the EUVD (since 2022-03-03).
When was CVE-2018-0180 published?: CVE-2018-0180 was published on 2018-03-28 and last updated on 2026-06-17.

References

Affected products (7)

cpe:2.3:o:cisco:ios:15.3\(00.00.19\)sy:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(01\)ia001.100:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.6\(01.22\)t:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(03\)m4.1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(2\)cg:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(2\)t:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.4\(3\)m:*:*:*:*:*:*:*

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