CVE-2018-0159

State: Published
Severity: 7.5 High
Published: Mar 28, 2018
Updated: Jan 12, 2026
Reserved: Nov 27, 2017

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-20

Affected Products

Product	Versions
Cisco IOS and IOS XEn/a	Cisco IOS and IOS XEAffected

References

103562vdb-entry
1040595vdb-entry
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-ike-dos
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0159government-resource

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