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CVE Record

CVE-2018-0471: Cisco IOS XE Software Cisco Discovery Protocol Memory Leak Vulnerability

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.

UnknownCVSS not scoredNot KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2018-0471 can let someone on the same local network segment make affected Cisco IOS XE devices leak memory until they crash and reload. The business impact is service interruption on routers or switches running Cisco IOS XE 16.6.1 or 16.6.2. Exposure is most likely on Cisco IOS XE devices running releases 16.6.1 or 16.6.2 with CDP reachable from adjacent network links. Internet-wide exposure is not indicated because the attacker must be adjacent. Treat as a targeted availability risk for network infrastructure. It is not cited as actively exploited, but a crash and reload on critical devices can disrupt business operations, so confirm affected versions and remediate through Cisco guidance. Mitigation focus: Review the Cisco advisory for fixed releases and vendor-supported remediation.; Prioritize affected network devices on critical routing, switching, or access paths.; Limit CDP exposure to trusted links where operationally possible and vendor-supported..

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Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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CVE-2018-0471 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
CiscoCisco IOS XE Softwaren/aListed
Weakness

CWE details

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CWE-400 · source CWE mapping

Uncontrolled Resource Consumption

Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.