CVEs / CVE-2020-16009

CVE-2020-16009: Google Chromium V8 Type Confusion Vulnerability

Known exploited in the CISA KEV catalog since 3 Nov 2021
high 8.8 CVSS 3.1 (NVD)
EPSS 48.2% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
Last changed at its sources 24 Oct 2026

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Summary

Google Chromium V8 Engine contains a type confusion vulnerability that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.
CISA, Known Exploited Vulnerabilities catalog

Description

Inappropriate implementation in V8 in Google Chrome prior to 86.0.4240.183 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
The CVE record, via NVD · published 3 Nov 2020 · NVD status: Analyzed

Affected and fixed versions

As stated by the CVE record (from the CNA)
Product	Affected	Fixed in
Google Chrome	from unspecified, before 86.0.4240.183	86.0.4240.183

As stated by OSV
Product	Affected	Fixed in
CefSharp.Common (NuGet)	before 86.0.241	86.0.241
CefSharp.Wpf (NuGet)	before 86.0.241	86.0.241
CefSharp.WinForms (NuGet)	before 86.0.241	86.0.241
CefSharp.Wpf.HwndHost (NuGet)	before 86.0.241	86.0.241

Package versions from GHSA-m7mf-48hp-5qmr.

Exploitation

In CISA KEV since	3 Nov 2021
Due date for US federal agencies	3 May 2022
Used in ransomware campaigns	Unknown
Required action	Apply updates per vendor instructions.

Severity

CVSS 3.1	8.8 high `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H` Scored by NVD
Weakness	CWE-787, CWE-843

References

CVE-2020-16009 on NVD
CVE-2020-16009 in the CISA KEV catalog
CVE-2020-16009 on OSV
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.html Broken Link, Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00017.html Broken Link, Mailing List, Third Party Advisory
http://packetstormsecurity.com/files/159974/Chrome-V8-Turbofan-Type-Confusion.html Exploit, Third Party Advisory, VDB Entry
https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop.html Release Notes, Vendor Advisory
https://crbug.com/1143772 Exploit, Issue Tracking
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S4XYJ7B6OXHZNYSA5J3DBUOFEC6WCAGW/ Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SC3U3H6AISVZB5PLZLLNF4HMQ4UFFL7M/ Release Notes
https://security.gentoo.org/glsa/202011-12 Third Party Advisory
https://www.debian.org/security/2021/dsa-4824 Mailing List, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-16009 US Government Resource

Sources

Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.

This product uses data from the NVD API but is not endorsed or certified by the NVD.