CVE-2018-0167Multiple 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,…
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It affects cisco ios and 2 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Mar 3, 2022; federal agencies had to remediate by Mar 17, 2022. Treat that date as your deadline.
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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.
- CVSS
- 8.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-119
- Known exploited
- Added to CISA KEV Mar 3, 2022; federal remediation due Mar 17, 2022Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 3.35% (percentile 89)
- Assigned by
- cisco
- NVD analysis
- Analyzed
- Record last updated
- Jan 12, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
cisco ios cisco:ios | 5.2.0.base; through 15.6.3m1; through 15.2\(6\)e0a; through 15.2\(4a\)ea5 | NVD |
cisco ios_xe cisco:ios_xe | 5.2.0.base; through 15.6.3m1; through 15.2\(6\)e0a; through 15.2\(4a\)ea5 | NVD |
cisco ios_xr cisco:ios_xr | from 4.1 before 5.1.3 | NVD |
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-lldpx-refsource-confirm, vendor-advisory
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-03x-refsource-misc, third-party-advisory, us-government-resource
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04x-refsource-misc, third-party-advisory, us-government-resource
- http://www.securitytracker.com/id/1040586vdb-entry, x-refsource-sectrack, broken-link, third-party-advisory
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05x-refsource-misc, third-party-advisory, us-government-resource
- http://www.securityfocus.com/bid/103564vdb-entry, x-refsource-bid, broken-link, third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0167us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.