CVE-2018-0159

Published: Mar 28, 2018Modified: Jan 14, 2026CISA KEV

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

A vulnerability in the implementation of Internet Key Exchange Version 1 (IKEv1) functionality in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of specific IKEv1 packets. An attacker could exploit this vulnerability by sending crafted IKEv1 packets to an affected device during an IKE negotiation. A successful exploit could allow the attacker to cause an affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCuj73916.

Affected (2)

Products: Cisco: Ios, Ios Xe

Cisco

2 products

Ios

Ios Xe

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Cisco Ios	Version 15.3(3)s

Configuration B

1 vulnerable · 12 platform

Vulnerable Software	Affected Versions
Cisco Ios Xe	Version 15.3(3)s

Running on/with	Platform Versions
Cisco Asr 901 12c F D	All versions
Cisco Asr 901 12c Ft D	All versions
Cisco Asr 901 4c F D	All versions
Cisco Asr 901 4c Ft D	All versions
Cisco Asr 901 6cz F A	All versions
Cisco Asr 901 6cz F D	All versions
Cisco Asr 901 6cz Ft A	All versions
Cisco Asr 901 6cz Ft D	All versions
Cisco Me 3600x 24cx M	All versions
Cisco Me 3600x 24fs M	All versions
Cisco Me 3600x 24ts M	All versions
Cisco Me 3800x 24fs M	All versions