Overview
There is a buffer overflow vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software which could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code.
https://nvd.nist.gov/vuln/detail/CVE-2018-0167
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2018-0167 |
| Vendor / Product | Cisco — IOS, XR, and XE Software |
| NVD Published | 2018-03-28 |
| NVD Last Modified | 2026-01-14 |
| CVSS 3.1 Score | 8.8 |
| CVSS 3.1 Vector | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Severity | HIGH |
| CWE | CWE-119 |
| CISA KEV Added | 2022-03-03 |
| CISA KEV Deadline | 2022-03-17 |
| Known Ransomware Use | No |
CVSS 3.1 Breakdown
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Required Action
CISA BOD 22-01 Deadline: 2022-03-17.
Apply updates per vendor instructions.
Timeline
| Date | Event |
|---|---|
| 2022-03-03 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2022-03-17 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2018-0167 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |