What’s Vulnerable › Vulnerabilities

CVE-2018-0466: Cisco IOS and IOS XE Software OSPFv3 Denial of Service Vulnerability

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% 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-399

Description

A vulnerability in the Open Shortest Path First version 3 (OSPFv3) implementation in Cisco IOS and IOS XE Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload. The vulnerability is due to incorrect handling of specific OSPFv3 packets. An attacker could exploit this vulnerability by sending crafted OSPFv3 Link-State Advertisements (LSA) to an affected device. An exploit could allow the attacker to cause an affected device to reload, leading to a denial of service (DoS) condition.

Affected products

• Cisco IOS: 16.2.1
• Cisco IOS XE: 16.2.1

References

• http://www.securityfocus.com/bid/105403
• http://www.securitytracker.com/id/1041737
• https://ics-cert.us-cert.gov/advisories/ICSA-19-094-03
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-ospfv3-dos
• http://www.securityfocus.com/bid/105403
• http://www.securitytracker.com/id/1041737
• https://ics-cert.us-cert.gov/advisories/ICSA-19-094-03
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-ospfv3-dos

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