CVE-2020-16009

Exp

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.

Published: 2020-11-03 Last update: 2025-10-24 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-16009 is rated Critical Active Threat (99.9/100): CVSS High severity, with high exploitation likelihood (EPSS 84.38%, 99th percentile). CISA KEV confirms active exploitation (added 2021-11-03) affecting Google / Chromium V8. a weakness (CWE-787) Unauthenticated remote administrative access may be possible. EPSS rose +8.37% over the last day, indicating growing attacker interest. The CISA remediation deadline has passed—treat as an emergency patch priority.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

CISA KEV Record for CVE-2020-16009

Name: Google Chromium V8 Type Confusion Vulnerability · CISA KEV detail

Exploit added: 2021-11-03

Action due: 2022-05-03

Required action: Apply updates per vendor instructions.

Public exploit references (Exploit-DB) for CVE-2020-16009

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2020-16009

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 76.01% 84.38% +8.37%
2 2025-11-18 84.38% 76.01% -8.37%
3 2025-11-05 — 84.38% —

Full EPSS history (48 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-16009

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 134c704f-9b21-4f2e-91b3-4a467353bcc0
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2020-16009

GitHub Security Advisory for CVE-2020-16009

GHSA-m7mf-48hp-5qmr · Severity: high · Ecosystem: nuget — Inappropriate implementation in V8

OS Trackers for CVE-2020-16009

vendor priority summary link
debian not yet assigned CVE-2020-16009 not yet assigned priority: Debian including 1 source packages (chromium), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2020-16009
gentoo normal CVE-2020-16009: 1 GLSA(s) (202011-12), 2 atom(s) (www-client/chromium, www-client/google-chrome); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2020-16009
redhat high — https://access.redhat.com/security/cve/CVE-2020-16009
ubuntu medium CVE-2020-16009 medium priority: Ubuntu including 1 source packages (chromium-browser), 6 status rows across 6 suites (bionic, focal, groovy, trusty, upstream, xenial): released 3, DNE 2, not-affected 1. https://ubuntu.com/security/CVE-2020-16009

Affected software / configurations for CVE-2020-16009

Vendor Product Version Raw CPE
cefsharp cefsharp < 86.0.241 cpe:2.3:a:cefsharp:cefsharp:*:*:*:*:*:*:*:*
google chrome < 86.0.4240.183 cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
microsoft edge < 86.0.622.63 cpe:2.3:a:microsoft:edge:*:*:*:*:*:*:*:*
microsoft edge_chromium < 86.0.4240.183 cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*
opensuse backports_sle 15.0 cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*
opensuse backports_sle 15.0 cpe:2.3:a:opensuse:backports_sle:15.0:sp2:*:*:*:*:*:*
opensuse leap 15.1 cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
opensuse leap 15.2 cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
fedoraproject fedora 32 cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
fedoraproject fedora 33 cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

References for CVE-2020-16009

URL Tags
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
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