What’s Vulnerable › Vulnerabilities

CVE-2018-0475: Cisco IOS and IOS XE Software Cluster Management Protocol Denial of Service Vulnerability

• Severity: high (CVSS 7.4 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-10-05 · updated 2026-06-17
• Weakness: CWE-20

Description

A vulnerability in the implementation of the cluster feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to trigger a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation when handling Cluster Management Protocol (CMP) messages. An attacker could exploit this vulnerability by sending a malicious CMP message to an affected device. A successful exploit could allow the attacker to cause the switch to crash and reload or to hang, resulting in a DoS condition. If the switch hangs it will not reboot automatically, and it will need to be power cycled manually to recover.

Affected products

• Cisco IOS: 15.0(2.0.0)
• Cisco IOS XE: 15.0(2.0.0)

References

• http://www.securityfocus.com/bid/105404
• http://www.securitytracker.com/id/1041737
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-cmp
• http://www.securityfocus.com/bid/105404
• http://www.securitytracker.com/id/1041737
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-cmp

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