CVE-2023-20080

HIGH

Cisco IOS - Unauthenticated Denial of Service via DHCPv6 Message Handling

Title source: llm
STIX 2.1

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.

References (1)

Core 1

Scores

CVSS v3 8.6
EPSS 0.0028
EPSS Percentile 51.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-129
Status published
Products (50)
cisco/ios 12.2\(6\)i1
cisco/ios 15.1\(2\)sg
cisco/ios 15.1\(2\)sg1
cisco/ios 15.1\(2\)sg2
cisco/ios 15.1\(2\)sg3
cisco/ios 15.1\(2\)sg4
cisco/ios 15.1\(2\)sg5
cisco/ios 15.1\(2\)sg6
cisco/ios 15.1\(2\)sg7
cisco/ios 15.1\(2\)sg8
... and 40 more
Published Mar 23, 2023
Tracked Since Feb 18, 2026