High severity8.6NVD Advisory· Published Oct 5, 2018· Updated Jun 17, 2026

CVE-2018-0467

Description

A vulnerability in the IPv6 processing code of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to incorrect handling of specific IPv6 hop-by-hop options. An attacker could exploit this vulnerability by sending a malicious IPv6 packet to or through the affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device.

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Affected products

Cisco Systems, Inc./iOS Xellm-fuzzy
Cisco Systems, Inc./Cisco iOSllm-fuzzy
Cisco Systems, Inc./iOS Xr Softwarecpe-rescue
Range: n/a

Patches

Vulnerability mechanics

References

www.securitytracker.com/id/1041737nvdThird Party AdvisoryVDB Entry
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180926-ipv6hbhnvdVendor Advisory
ics-cert.us-cert.gov/advisories/ICSA-19-094-03nvd

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