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CVE-2020-16009

85
FAUCET Score

CVE-2020-16009 is a critical heap corruption vulnerability in Google Chrome's V8 JavaScript engine, affecting versions prior to 86.0.4240.183, as well as products like CefSharp, Debian, and Microsoft Edge. With a CVSS score of 8.8 (HIGH), it allows remote attackers to achieve high impact on confidentiality, integrity, and availability through a crafted HTML page, requiring user interaction. This vulnerability is actively exploited in the wild, as confirmed by its presence in the KEV catalog and extensive media coverage, despite no public exploit code being available on platforms like Metasploit or ExploitDB. Community discussion indicates significant interest in understanding and finding exploit code for this zero-day.

Impacted Technologies

VendorProductVersion(s)CPE
< 86.0.241CPE matchmatch criteria
cpe:2.3:a:cefsharp:cefsharp:*:*:*:*:*:*:*:*
< 86.0.4240.183CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
< 86.0.622.63CPE matchmatch criteria
cpe:2.3:a:microsoft:edge:*:*:*:*:*:*:*:*
< 86.0.4240.183CPE matchmatch criteria
cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*
15.0CPE matchmatch criteria
cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
48.57%
Probability of exploitation in next 30 days
EPSS Percentile
98.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Added to KEV · Nov 3, 2021
This CVE's current EPSS score of 0.4857 is in the 99th percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

nugetpatch availablevia ghsa
Product: CefSharp.CommonFixed in: 86.0.241
nugetpatch availablevia ghsa
Product: CefSharp.WpfFixed in: 86.0.241
nugetpatch availablevia ghsa
Product: CefSharp.WinFormsFixed in: 86.0.241
nugetpatch availablevia ghsa
Product: CefSharp.Wpf.HwndHostFixed in: 86.0.241
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: chromium-browser-0:86.0.4240.183-1.el6_10
View patch
googlevendor investigatingvia nvd_reference
View patch

Vendor Advisories (2)

nugetGHSA-m7mf-48hp-5qmrhigh

Inappropriate implementation in V8

Dec 2, 2020
redhatCVE-2020-16009Important

chromium-browser: Inappropriate implementation in V8

Nov 2, 2020

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
lists.opensuse.org / opensuse-security-announce/2020-11/msg00016.html
Broken LinkMailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2020-11/msg00017.html
Broken LinkMailing ListThird Party Advisory
packetstormsecurity.com / files/159974/Chrome-V8-Turbofan-Type-Confusion.html
ExploitThird Party AdvisoryVDB Entry
chromereleases.googleblog.com / 2020/11/stable-channel-update-for-desktop.html
Release NotesVendor Advisory
crbug.com / 1143772
ExploitIssue Tracking
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/S4XYJ7B6OXHZNYSA5J3DBUOFEC6WCAGW
Release Notes
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/SC3U3H6AISVZB5PLZLLNF4HMQ4UFFL7M
Release Notes
security.gentoo.org / glsa/202011-12
Third Party Advisory
debian.org / security/2021/dsa-4824
Mailing ListThird Party Advisory