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CVE-2018-0163

21
FAUCET Score

CVE-2018-0163 is a medium-severity vulnerability in the 802.1x multiple-authentication feature of Cisco IOS Software, also affecting Rockwell Automation products. An unauthenticated, adjacent attacker can bypass authentication on a multi-auth port, gaining unauthorized network access. The vulnerability has a CVSS score of 6.5 (MEDIUM) with an attack vector of adjacent network and low attack complexity, leading to high integrity impact. There is no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage for this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
15.4\(3\)m6CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.4\(3\)m6:*:*:*:*:*:*:*
15.4\(3\)m6aCPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.4\(3\)m6a:*:*:*:*:*:*:*
15.4\(3\)m7CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.4\(3\)m7:*:*:*:*:*:*:*
15.4\(3\)m7aCPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.4\(3\)m7a:*:*:*:*:*:*:*
15.4\(3\)m8CPE matchmatch criteria
cpe:2.3:o:cisco:ios:15.4\(3\)m8:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.66%
Probability of exploitation in next 30 days
EPSS Percentile
47.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0066 is in the 75th percentile among its peer group of 1,802 CVEs.

Social Chatter

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

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dot1x
Vendor Advisory
securityfocus.com / bid/103571
Third Party AdvisoryVDB Entry