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CVE-2017-5120

22
FAUCET Score

CVE-2017-5120 describes an inappropriate use of www mismatch redirects in Google Chrome versions prior to 61.0.3163.79 (Mac, Windows, Linux) and 61.0.3163.81 (Android), affecting products from Apple, Debian, Google, Linux, Microsoft, and Red Hat. This vulnerability allowed a remote attacker, via a crafted HTML page, to potentially downgrade HTTPS requests to HTTP, leading to cleartext transmission despite the user entering an HTTPS URL. With a CVSS score of 6.5 (Medium), this vulnerability has a low attack complexity and requires user interaction (UI:R) but could result in a high impact on integrity (I:H), as it bypasses the intended secure connection. There is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and it is not listed in the KEV catalog, indicating low current exploitation risk and limited community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 61.0.3163.79CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
< 61.0.3163.81CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
1.13%
Probability of exploitation in next 30 days
EPSS Percentile
63.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0113 is in the 76th percentile among its peer group of 26,234 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-0:61.0.3163.79-2.el6_9
View patch

Vendor Advisories (1)

redhatCVE-2017-5120Low

chromium-browser: potential https downgrade during redirect navigation

Sep 5, 2017

References

access.redhat.com / errata/RHSA-2017:2676
chromereleases.googleblog.com / 2017/09/stable-channel-update-for-desktop.html
crbug.com / 718676
security.gentoo.org / glsa/201709-15
debian.org / security/2017/dsa-3985
securityfocus.com / bid/100610
securitytracker.com / id/1039291