How severe is CVE-2018-0167?

CVE-2018-0167 has a CVSS 3.1 base score of 8.8 (HIGH). EPSS estimates a 3.4% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2018-0167: Cisco IOS, XR, and XE Software Buffer Overflow

CISA Known Exploited Vulnerabilities

Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-03-03

Remediation due

2022-03-17

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2018-0167

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.

Severity

CVSS 3.1 · CISA8.8 HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
-	Cisco IOS, IOS XE, and IOS XR	Cisco IOS, IOS XE, and IOS XR

References

6 Links

Vulnerability databases

Other references

Record Details

Published

2018-03-28

Last updated

2026-01-12

Assigner (CNA)

cisco

Credited to

Related Tool Categories

Tool categories that test for or protect against this vulnerability class.

CWE-119 · Improper Restriction of Memory Buffer

Fuzzing Binary Exploitation

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.