CVE-2020-6383

Name: CVE-2020-6383
Creator: NVD / NIST
Published: 2020-02-27T23:15:12.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 6.38%

Last modified Jun 17, 2026

CVE-2020-6383 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Type confusion in V8 in Google Chrome prior to 80.0.3987.116 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.. EPSS estimates a 6.38% chance of exploitation in the next 30 days.

Description

Type confusion in V8 in Google Chrome prior to 80.0.3987.116 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

6.38%

92.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-843

Affected Software

Vendor	Product	Versions
Google	Chrome	< 80.0.3987.116
Fedoraproject	Fedora	30
Fedoraproject	Fedora	31
Redhat	Enterprise Linux Desktop	6.0
Redhat	Enterprise Linux Server	6.0
Redhat	Enterprise Linux Workstation	6.0
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0

References

https://access.redhat.com/errata/RHSA-2020:0738Third Party Advisory
https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_18.htmlRelease Notes, Vendor Advisory
https://crbug.com/1051017Exploit, Issue Tracking, Patch, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3B5RWJQD5LA45MYLLR55KZJOJ5NVZGP/
https://www.debian.org/security/2020/dsa-4638Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0738Third Party Advisory
https://chromereleases.googleblog.com/2020/02/stable-channel-update-for-desktop_18.htmlRelease Notes, Vendor Advisory
https://crbug.com/1051017Exploit, Issue Tracking, Patch, Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X3B5RWJQD5LA45MYLLR55KZJOJ5NVZGP/
https://www.debian.org/security/2020/dsa-4638Third Party Advisory

Timeline

Published: Feb 27, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-6383?

Type confusion in V8 in Google Chrome prior to 80.0.3987.116 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

How severe is CVE-2020-6383?

CVE-2020-6383 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 6.38% probability of exploitation in the next 30 days.

How do I fix CVE-2020-6383?

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-2020-6383?

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

Scan your code now

Source: NVD / NIST