CVE-2018-6166

Severity: medium (CVSS 6.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-01-09 · updated 2026-06-17

Description

Incorrect handling of confusable characters in URL Formatter in Google Chrome prior to 68.0.3440.75 allowed a remote attacker to perform domain spoofing via IDN homographs via a crafted domain name.

Affected products

Debian Linux: 9.0
Google Chrome: before 68.0.3440.75 — fixed in 68.0.3440.75
RedHat Enterprise Linux Desktop: 6.0
RedHat Enterprise Linux Server: 6.0
RedHat Enterprise Linux Workstation: 6.0

How to fix

Upgrade to a fixed version: Google Chrome 68.0.3440.75. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/104887
https://access.redhat.com/errata/RHSA-2018:2282
https://chromereleases.googleblog.com/2018/07/stable-channel-update-for-desktop.html
https://crbug.com/835554
https://security.gentoo.org/glsa/201808-01
https://www.debian.org/security/2018/dsa-4256
http://www.securityfocus.com/bid/104887
https://access.redhat.com/errata/RHSA-2018:2282
https://chromereleases.googleblog.com/2018/07/stable-channel-update-for-desktop.html
https://crbug.com/835554
https://security.gentoo.org/glsa/201808-01
https://www.debian.org/security/2018/dsa-4256

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