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CVE-2017-15420

22
FAUCET Score

CVE-2017-15420 describes a vulnerability in Google Chrome versions prior to 63.0.3239.84, where incorrect handling of back navigations on error pages allowed a remote attacker to spoof the Omnibox (URL bar) via a crafted HTML page. This medium-severity vulnerability (CVSS 6.5) requires user interaction (UI:R) and has a low attack complexity (AC:L), with a high impact on integrity (I:H) due to the potential for phishing or deceptive content. While there is no evidence of active exploitation (KEV: No) and no public exploit code (Metasploit, Nuclei, ExploitDB: None), the vulnerability has garnered significant community discussion and media coverage, indicating awareness within the cybersecurity landscape.

Impacted Technologies

VendorProductVersion(s)CPE
< 63.0.3239.84CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

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
1.54%
Probability of exploitation in next 30 days
EPSS Percentile
72.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0154 is in the 85th percentile among its peer group of 26,220 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-0:63.0.3239.84-1.el6_9
View patch

Vendor Advisories (1)

redhatCVE-2017-15420Moderate

chromium-browser: url spoofing in omnibox

Dec 6, 2017

References

access.redhat.com / errata/RHSA-2017:3401
chromereleases.googleblog.com / 2017/12/stable-channel-update-for-desktop.html
crbug.com / 777419
security.gentoo.org / glsa/201801-03
debian.org / security/2017/dsa-4064
debian.org / security/2018/dsa-4103
securitytracker.com / id/1040282