VULNERABILITY INTELLIGENCE

CVE-2023-20080

CVSS score8.6 HIGH
EPSS probability0.95%
CISA KEVNot currently listed
Published2023-03-23
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

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.

Weakness classification

  • psirt@cisco.com: CWE-129
  • nvd@nist.gov: CWE-129

Primary references