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CVE-2018-0167

High 8.8 Exploited in the wild (KEV)

Confirmed active exploitation — CISA KEV catalog

Name
Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability
Added to catalog
Remediation due date (US federal)
Required action
Apply updates per vendor instructions.

Description

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.

Metrics

CVSS 3.1
8.8 (HIGH) Score source: NVD CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS — exploit probability
3% (percentile: 89) as of 1 November 2026
CWE
CWE-119

Affected products

cisco: ios; cisco: ios xe; cisco: ios xr; cisco: asr 9001; cisco: asr 9006; cisco: asr 9010; cisco: asr 9904; cisco: asr 9906; cisco: asr 9910; cisco: asr 9912; cisco: asr 9922; rockwellautomation: allen-bradley stratix 5900; rockwellautomation: allen-bradley armorstratix 5700; rockwellautomation: allen-bradley stratix 5400; rockwellautomation: allen-bradley stratix 5410

References