CVE-2018-0159

7.5 HIGH CISA KEV - Actively Exploited
Published: March 28, 2018 Modified: October 28, 2025

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://www.securityfocus.com/bid/103562
Source: psirt@cisco.com
Broken Link Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040595
Source: psirt@cisco.com
Broken Link Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/103562
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040595
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link Third Party Advisory VDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0159
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

7 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
6.4%
91th percentile
Exploitation Status
Actively Exploited
Remediation due: 2022-03-17

Weaknesses (CWE)

Affected Vendors

cisco