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CVE-2020-6557

18
FAUCET Score

CVE-2020-6557 describes a domain spoofing vulnerability in Google Chrome versions prior to 86.0.4240.75, stemming from an inappropriate networking implementation that allowed a remote attacker to manipulate the displayed domain via a crafted HTML page. This medium-severity vulnerability (CVSS 6.5) requires user interaction (UI:R) and could lead to high integrity impact (I:H) without affecting confidentiality or availability. While it impacts products like Debian, Fedora, Google Chrome, and OpenSUSE, there is no evidence of active exploitation, nor is public exploit code available in Metasploit, Nuclei, or ExploitDB, with minimal community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 86.0.4240.75CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
15.0CPE matchmatch criteria
cpe:2.3:a:opensuse:backports_sle:15.0:sp2:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
31CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

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
1.50%
Probability of exploitation in next 30 days
EPSS Percentile
71.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0150 is in the 84th percentile among its peer group of 26,236 CVEs.

Social Chatter

No social media mentions found for this CVE.

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 (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: chromium-browser-0:86.0.4240.75-1.el6_10
View patch
googlevendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2020-6557Moderate

chromium-browser: Inappropriate implementation in networking

Oct 6, 2020

References

lists.opensuse.org / opensuse-security-announce/2020-11/msg00016.html
Mailing ListThird Party Advisory
chromereleases.googleblog.com / 2020/10/stable-channel-update-for-desktop.html
Release NotesVendor Advisory
crbug.com / 1083278
Permissions RequiredVendor Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/24QFL4C3AZKMFVL7LVSYMU2DNE5VVUGS
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/4GWCWNHTTYOH6HSFUXPGPBB6J6JYZHZE
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/SC3U3H6AISVZB5PLZLLNF4HMQ4UFFL7M
security.gentoo.org / glsa/202101-30
Third Party Advisory
debian.org / security/2021/dsa-4824
Third Party Advisory