CVE-2018-0167

Original summary

Normalized public record · Updated Oct 23, 2026

Multiple Buffer Overflow vulnerabilities in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. Cisco Bug IDs: CSCuo17183, CSCvd73487.

Publisher and source text is retained separately from QFinch interpretation.

Affected products

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

1. Confirm the affected product and reachable code path exist in your environment.
2. Apply the vendor-supported patch or mitigation from the primary advisory.
3. Rescan the exact deployed revision and retain verification evidence.

Evidence coverage

SSVC priority

IMMEDIATE

Confidence

35%

Aliases

None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

1. tools.cisco.com ↗
2. ics-cert.us-cert.gov ↗
3. ics-cert.us-cert.gov ↗
4. 1040586 ↗
5. ics-cert.us-cert.gov ↗
6. 103564 ↗
7. CISA advisory ↗

Record history

Published Mar 28, 2018 · Last refreshed Oct 23, 2026