CVE-2018-0471

A vulnerability in the Cisco Discovery Protocol (CDP) module of Cisco IOS XE Software Releases 16.6.1 and 16.6.2 could allow an unauthenticated, adjacent attacker to cause a memory leak that may lead to a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain CDP packets. An attacker could exploit this vulnerability by sending certain CDP packets to an affected device. A successful exploit could cause an affected device to continuously consume memory and eventually result in a memory allocation failure that leads to a crash, triggering a reload of the affected device.

• CWE-400
• CWE-772

• http://www.securityfocus.com/bid/105398Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1041737Third Party Advisory, VDB Entry
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-cdp-memleakVendor Advisory
• http://www.securityfocus.com/bid/105398Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1041737Third Party Advisory, VDB Entry
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-cdp-memleakVendor Advisory

Published

Oct 5, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2018-0465A vulnerability in the web-based management interface of Cis…
• CVE-2018-0466A vulnerability in the Open Shortest Path First version 3 (O…
• CVE-2018-0467A vulnerability in the IPv6 processing code of Cisco IOS and…
• CVE-2018-0468A vulnerability in the configuration of a local database ins…
• CVE-2018-0469A vulnerability in the web user interface of Cisco IOS XE So…
• CVE-2018-0470A vulnerability in the web framework of Cisco IOS XE Softwar…
• CVE-2018-0472A vulnerability in the IPsec driver code of multiple Cisco I…
• CVE-2018-0473A vulnerability in the Precision Time Protocol (PTP) subsyst…
• CVE-2018-0474A vulnerability in the web-based management interface of Cis…8.8
• CVE-2018-0475A vulnerability in the implementation of the cluster feature…
• CVE-2018-0476A vulnerability in the Network Address Translation (NAT) Ses…
• CVE-2018-0477A vulnerability in the CLI parser of Cisco IOS XE Software c…6.7