What is CVE-2020-6401?

CVE-2020-6401 is a medium-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2020-02-11.

How severe is CVE-2020-6401?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2020-6401 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in Google Chrome

CVE-2020-6401

Insufficient validation of untrusted input in Omnibox in Google Chrome prior to 80.0.3987.87 allowed a remote attacker to perform domain spoofing via IDN homographs via a crafted domain name.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2020-02-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.019 (79.4th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

Google Chrome — versions unspecified
openSUSE Backports Sle — versions 15.0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop.html (Vendor Advisory)
crbug.com/1017707 (Permissions Required)
lists.opensuse.org/opensuse-security-announce/2020-02/msg00015.html (vendor-advisory, Third Party Advisory)
access.redhat.com/errata/RHSA-2020:0514 (vendor-advisory)
lists.opensuse.org/opensuse-security-announce/2020-02/msg00025.html (vendor-advisory)
www.debian.org/security/2020/dsa-4638 (vendor-advisory)
security.gentoo.org/glsa/202003-08 (vendor-advisory)
lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)

Frequently asked questions

What is CVE-2020-6401?: CVE-2020-6401 is a medium-severity vulnerability in Google Chrome, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2020-02-11.
How severe is CVE-2020-6401?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2020-6401 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.