CVE-2018-0158

A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a memory leak or a reload of an affected device that leads to a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain IKEv2 packets. An attacker could exploit this vulnerability by sending crafted IKEv2 packets to an affected device to be processed. A successful exploit could cause an affected device to continuously consume memory and eventually reload, resulting in a DoS condition. Cisco Bug IDs: CSCvf22394.

• CWE-20
• CWE-401

• http://www.securityfocus.com/bid/103566Broken Link, Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1040595Broken Link, Third Party Advisory, VDB Entry
• https://ics-cert.us-cert.gov/advisories/ICSA-18-107-03Third Party Advisory, US Government Resource, VDB Entry
• https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04Third Party Advisory, US Government Resource, VDB Entry
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-ikeVendor Advisory
• http://www.securityfocus.com/bid/103566Broken Link, Third Party Advisory, VDB Entry
• http://www.securitytracker.com/id/1040595Broken Link, Third Party Advisory, VDB Entry
• https://ics-cert.us-cert.gov/advisories/ICSA-18-107-03Third Party Advisory, US Government Resource, VDB Entry
• https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04Third Party Advisory, US Government Resource, VDB Entry
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-ikeVendor Advisory
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0158US Government Resource

Published

Mar 28, 2018

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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