Unrated severityNVD Advisory· Published Mar 23, 2023· Updated Oct 28, 2024

Cisco IOS and IOS XE Software IPv6 DHCP (DHCPv6) Relay and Server Denial of Service Vulnerability

CVE-2023-20080

Description

A vulnerability in the IPv6 DHCP version 6 (DHCPv6) relay and server features of Cisco IOS and IOS XE Software could allow an unauthenticated, remote attacker to trigger a denial of service (DoS) condition. This vulnerability is due to insufficient validation of data boundaries. An attacker could exploit this vulnerability by sending crafted DHCPv6 messages to an affected device. A successful exploit could allow the attacker to cause the device to reload unexpectedly.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Cisco Systems, Inc./iOS Xellm-fuzzy
Cisco Systems, Inc./Cisco iOSllm-fuzzy2 versions
(expand)+ 1 more
- (no CPE)
- (no CPE)range: n/a

Patches

Vulnerability mechanics

References

sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-dhcpv6-dos-44cMvdDKmitrevendor-advisory

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