What’s Vulnerable › Vulnerabilities

CVE-2017-5066

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-10-27 · updated 2026-06-17
• Weakness: CWE-347

Description

Insufficient consistency checks in signature handling in the networking stack in Google Chrome prior to 58.0.3029.81 for Mac, Windows, and Linux, and 58.0.3029.83 for Android, allowed a remote attacker to incorrectly accept a badly formed X.509 certificate via a crafted HTML page.

Affected products

• Google Chrome: before 58.0.3029.81; before 58.0.3029.83 — fixed in 58.0.3029.81, 58.0.3029.83
• 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 58.0.3029.81, 58.0.3029.83. Check the vendor advisory for mitigations.

References

• http://www.securityfocus.com/bid/97939
• http://www.securitytracker.com/id/1038317
• https://access.redhat.com/errata/RHSA-2017:1124
• https://chromereleases.googleblog.com/2017/04/stable-channel-update-for-desktop.html
• https://crbug.com/690821
• https://security.gentoo.org/glsa/201705-02
• http://www.securityfocus.com/bid/97939
• http://www.securitytracker.com/id/1038317
• https://access.redhat.com/errata/RHSA-2017:1124
• https://chromereleases.googleblog.com/2017/04/stable-channel-update-for-desktop.html
• https://crbug.com/690821
• https://security.gentoo.org/glsa/201705-02

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