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CVE-2018-0158

68
FAUCET Score

CVE-2018-0158 is a denial-of-service vulnerability affecting the Internet Key Exchange Version 2 (IKEv2) module in Cisco IOS and IOS XE Software, as well as Rockwell Automation products. An unauthenticated, remote attacker can exploit this by sending crafted IKEv2 packets, leading to a memory leak and eventual device reload. With a CVSS score of 8.6 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, resulting in a complete loss of availability. This CVE is listed in CISA's KEV catalog, indicating active exploitation, despite a lack of public exploit code or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
15.5\(3\)s1.1CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.5\(3\)s1.1:*:*:*:*:*:*:*
15.5\(3\)s1.2CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.5\(3\)s1.2:*:*:*:*:*:*:*
15.5\(3\)s1.4CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.5\(3\)s1.4:*:*:*:*:*:*:*
15.5\(3\)s1.5CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.5\(3\)s1.5:*:*:*:*:*:*:*
15.5\(3\)s1.7CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.5\(3\)s1.7:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
7.33%
Probability of exploitation in next 30 days
EPSS Percentile
93.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Mar 3, 2022
This CVE's current EPSS score of 0.0733 is in the 90th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
ics-cert.us-cert.gov / advisories/ICSA-18-107-03
Third Party AdvisoryUS Government ResourceVDB Entry
ics-cert.us-cert.gov / advisories/ICSA-18-107-04
Third Party AdvisoryUS Government ResourceVDB Entry
tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-ike
Vendor Advisory
securityfocus.com / bid/103566
Broken LinkThird Party AdvisoryVDB Entry
securitytracker.com / id/1040595
Broken LinkThird Party AdvisoryVDB Entry