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CVE-2018-6140

27
FAUCET Score

CVE-2018-6140 describes a high-severity vulnerability in Google Chrome prior to version 67.0.3396.62, affecting Debian, Google, and Red Hat products. An attacker could exploit this by tricking a user into installing a malicious Chrome Extension, which then used the chrome.debugger API to attach to Web UI pages in DevTools. This allowed for arbitrary code execution with high impact on confidentiality, integrity, and availability. While the CVSS score is 8.8 (High), there is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and it is not listed in CISA's KEV catalog. Community discussion and media coverage are minimal, suggesting limited public awareness or active threat.

Impacted Technologies

VendorProductVersion(s)CPE
< 67.0.3396.62CPE 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

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.64%
Probability of exploitation in next 30 days
EPSS Percentile
84.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0264 is in the 83rd percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: chromium-browser-0:67.0.3396.62-2.el6_9
View patch

Vendor Advisories (1)

redhatCVE-2018-6140Moderate

chromium-browser: Restrictions bypass in the debugger extension API

May 29, 2018

References

access.redhat.com / errata/RHSA-2018:1815
chromereleases.googleblog.com / 2018/05/stable-channel-update-for-desktop_58.html
crbug.com / 798222
debian.org / security/2018/dsa-4237
securityfocus.com / bid/104309
securitytracker.com / id/1041014