Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability
- Severity
- High8.8CVSS 3.1, High
- EPSS
- 3%
- Published
- 28 Mar 2018
- Updated
- 17 Jun 2026
Description
Title, description and vendor guidance are quoted from the source records.
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.
Weakness: CWE-119
Known exploited
Added to CISA KEV on 3 Mar 2022
Federal remediation due date: 17 Mar 2022
Required action: Apply updates per vendor instructions.
Exploit prediction
3% probability of exploitation in the next 30 days (percentile 88%).
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Patcharo shows this vulnerability for information but does not match versions for this product yet.
- n/a Cisco IOS, IOS XE, and IOS XR · Cisco IOS, IOS XE, and IOS XR
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-lldp(opens in a new tab)
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-03(opens in a new tab)
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04(opens in a new tab)
- https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05(opens in a new tab)
Provenance
Every fact on this page comes from the sources below. Nothing is written by an AI.
- Cisco (CVE record)
- Cisco (CVE record) · 27 Sept 2026, 23:46 UTC · Parser patcharo-cve5/1.1.0
- CISA Known Exploited Vulnerabilities
- CISA Known Exploited Vulnerabilities · 27 Sept 2026, 23:42 UTC · Parser patcharo-kev/1.0.0
- NVD
- NVD · 27 Sept 2026, 23:44 UTC · Parser patcharo-nvd/1.0.0
- FIRST EPSS
- FIRST EPSS · 27 Sept 2026, 23:46 UTC · Parser patcharo-epss/1.0.0
Last verified: 28 Sept 2026, 02:31 UTC