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CVE-2018-6166

22
FAUCET Score

CVE-2018-6166 describes a domain spoofing vulnerability in Google Chrome versions prior to 68.0.3440.75, stemming from incorrect handling of confusable characters in the URL Formatter, allowing attackers to leverage IDN homographs. This medium-severity vulnerability (CVSS 6.5) requires user interaction (UI:R) but has low attack complexity (AC:L), potentially leading to high integrity impact (I:H) by deceiving users about the true domain. While there is no evidence of active exploitation, no public exploit code (Metasploit, Nuclei, ExploitDB), and it's not on the KEV catalog, it has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 68.0.3440.75CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.46%
Probability of exploitation in next 30 days
EPSS Percentile
70.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0146 is in the 83rd percentile among its peer group of 26,221 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

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

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: chromium-browser-0:68.0.3440.75-1.el6_10
View patch

Vendor Advisories (1)

redhatCVE-2018-6166Moderate

chromium-browser: URL spoof in Omnibox

Jul 24, 2018

References

access.redhat.com / errata/RHSA-2018:2282
chromereleases.googleblog.com / 2018/07/stable-channel-update-for-desktop.html
crbug.com / 835554
security.gentoo.org / glsa/201808-01
debian.org / security/2018/dsa-4256
securityfocus.com / bid/104887