CVE-2020-6493

Name: CVE-2020-6493
Creator: NVD / NIST
Published: 2020-06-03T23:15:11.76+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.6/10EPSS 1.68%

Last modified Jun 17, 2026

CVE-2020-6493 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. Use after free in WebAuthentication in Google Chrome prior to 83.0.4103.97 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.. EPSS estimates a 1.68% chance of exploitation in the next 30 days.

Description

Use after free in WebAuthentication in Google Chrome prior to 83.0.4103.97 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

Metrics

CVSS 3.1

9.6/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

EPSS Probability

1.68%

74.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions	Update
Google	Chrome	< 83.0.4103.97	—
Debian	Debian Linux	9.0	—
Debian	Debian Linux	10.0	—
Opensuse	Backports	sle-15	Sp1
Opensuse	Leap	15.1	—

References

http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00034.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00038.htmlThird Party Advisory
https://chromereleases.googleblog.com/2020/06/stable-channel-update-for-desktop.htmlVendor Advisory
https://crbug.com/1082105Permissions Required
https://security.gentoo.org/glsa/202006-02Third Party Advisory
https://www.debian.org/security/2020/dsa-4714Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00034.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00038.htmlThird Party Advisory
https://chromereleases.googleblog.com/2020/06/stable-channel-update-for-desktop.htmlVendor Advisory
https://crbug.com/1082105Permissions Required
https://security.gentoo.org/glsa/202006-02Third Party Advisory
https://www.debian.org/security/2020/dsa-4714Third Party Advisory

Timeline

Published: Jun 3, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-6493?

How severe is CVE-2020-6493?

CVE-2020-6493 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 1.68% probability of exploitation in the next 30 days.

How do I fix CVE-2020-6493?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-6493?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST