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CVE-2020-16009

Google Chromium V8 Type Confusion

8.8 HIGHActively exploited (CISA KEV)Public exploitEPSS 48.3%
  1. Published3 Nov 2020
  2. Added to CISA KEV3 Nov 2021
  3. Remediation due3 May 2022
Actively exploited (CISA KEV)

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.

Added to KEV: 3 Nov 2021Federal remediation due: 3 May 2022

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Cefsharp< 86.0.241
Google Chrome< 86.0.4240.183
Microsoft Edge< 86.0.622.63
Microsoft Edge Chromium< 86.0.4240.183
Opensuse Backports Sle15.0
Debian Linux10.0
Fedoraproject Fedora32 · 33
Opensuse Leap15.1 · 15.2

Remediation

Fixed in
Cefsharp≥ 86.0.241
Google Chrome≥ 86.0.4240.183
Microsoft Edge≥ 86.0.622.63
Microsoft Edge Chromium≥ 86.0.4240.183

References

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Frequently asked

Is CVE-2020-16009 being actively exploited?

Yes. CVE-2020-16009 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 3 Nov 2021.

How severe is CVE-2020-16009?

CVE-2020-16009 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 48.3% probability of exploitation.

Which products are affected by CVE-2020-16009?

Affected products include Cefsharp, Google Chrome, Microsoft Edge, Microsoft Edge Chromium, Opensuse Backports Sle, and 3 more.

How do I fix CVE-2020-16009?

Upgrade affected software to a fixed version, for example Cefsharp 86.0.241, Google Chrome 86.0.4240.183, Microsoft Edge 86.0.622.63 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2020-16009 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.