CVE-2018-0158
Cisco IOS and XE Software Internet Key Exchange Memory Leak Vulnerability
Cisco IOS Software and Cisco IOS XE SoftwareNetwork & edge
CVSS
8.6HighExploit odds (EPSS)7.19%Chance of exploitation activity in the next 30 days, higher than 94% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
CISA required actionApply updates per vendor instructions. CISA KEV
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Timeline
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.
Text from CVE List
Affected versions 1
- Cisco IOS and IOS XEaffected: Cisco IOS and IOS XECVE List
References 5
- ics-cert.us-cert.gov/advisories/ICSA-18-107-03Advisoryvia CVE List
- ics-cert.us-cert.gov/advisories/ICSA-18-107-04Advisoryvia CVE List
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-ikeAdvisoryvia CVE List
- nvd.nist.gov/vuln/detail/CVE-2018-0158Referencevia CISA KEV
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0158Referencevia CVE List