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Vulnerability Intelligence

CVE-2020-16009

HighExploitedPublic exploit

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 Mar 16, 2021 · Updated Aug 5, 2026 · Also known as DEBIAN-CVE-2020-16009, GHSA-m7mf-48hp-5qmr, UBUNTU-CVE-2020-16009

Key Facts

Patch immediately
  • CVE-2020-16009 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Cefsharp, Chrome (Google), Edge (Microsoft) and 16 more products.
  • It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Oct 29, 2020. Public exploit code is available.
  • EPSS estimates a 48% probability of exploitation in the next 30 days.
  • Fixed versions are available, including Cefsharp 86.0.241, CefSharp.Common 86.0.241, CefSharp.WinForms 86.0.241.
  • Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

8.8

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

EPSS (30-day exploit likelihood)

48%

Higher than 98.8% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2020-16009 brief as a PDF

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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.

Known-Exploited Catalog Listings

CatalogAddedRemediation dueRansomware use
CISA KEVNov 3, 2021May 3, 2022Not reported
Industry KEV feedOct 29, 2020May 3, 2022Not reported
CIRCL KEVNov 3, 2021May 3, 2022Not reported
ENISA EUVDNov 3, 2021n/aNot reported

Required action: Apply updates per vendor instructions.

Affected Products

46 affected entries in total
ProductAffected versionsFixed in
CefsharpCefsharpSee advisory86.0.241
ChromeGoogle>= unspecified86.0.4240.183
EdgeMicrosoftSee advisory86.0.622.63
Edge ChromiumMicrosoftSee advisory86.0.4240.183
Backports SleOpensuse15.0-sp1, 15.0-sp2n/a
14 more affected products in the full CVE brief

Patched Releases

Cefsharp

86.0.241

CefSharp.Common

86.0.241

CefSharp.WinForms

86.0.241

CefSharp.Wpf

86.0.241

CefSharp.Wpf.HwndHost

86.0.241

Chrome

86.0.4240.183

chromedriver

86.0.4240.183-bp151.3.119.1, 86.0.4240.183-bp151.3.125.1, 86.0.4240.183-bp152.2.26.1, 93.0.4577.82-1.1

chromium

86.0.4240.183-1, 86.0.4240.183-bp151.3.119.1, 86.0.4240.183-bp151.3.125.1, 86.0.4240.183-bp152.2.26.1, 87.0.4280.88-0.1, 87.0.4280.88-0.4~deb10u1, 93.0.4577.82-1.1

chromium-browser

0:86.0.4240.183-1.el6_10, 86.0.4240.198-0ubuntu0.16.04.1, 86.0.4240.198-0ubuntu0.18.04.1

gn

0.1807-bp152.2.3.4

Edge

86.0.622.63

Edge Chromium

86.0.4240.183

opera

72.0.3815.320-lp152.2.21.1

ungoogled-chromium

113.0.5672.92-1.1

ungoogled-chromium-chromedriver

113.0.5672.92-1.1

Timeline

  1. Added to Industry KEV feed

    Oct 29, 2020

  2. Publicly disclosed

    Mar 16, 2021

  3. Added to CISA KEV

    Nov 3, 2021

  4. Added to CIRCL KEV

    Nov 3, 2021

  5. Added to ENISA EUVD

    Nov 3, 2021

  6. Last updated

    Aug 5, 2026

Weakness Type

  • CWE-787 Out-of-bounds Write
  • CWE-843 Access of Resource Using Incompatible Type ('Type Confusion')

References

15 more references in the full CVE brief

FAQ

Common Questions.

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