CVE-2020-16009VulnerabilityPublished 11/03/2021Updated 10/24/2026

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

Affects Google Chromium V8Source CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 11/03/2021
KEV deadline: 05/03/2022
EPSS: 48.3% chance of exploitation in 30 days – higher than 98% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2020-16009 (opens in a new tab)

Description

CVE-2020-16009 is a high-severity type confusion vulnerability in the Google Chromium V8 JavaScript engine. It allows a remote attacker to potentially cause heap corruption by crafting a malicious HTML page. This vulnerability affects multiple web browsers that use the Chromium engine, such as Google Chrome, Microsoft Edge, and Opera. Exploits for this vulnerability have been observed in the wild.

Summary

The Google Chromium V8 engine contains a type confusion vulnerability (CWE-787, CWE-843) that can be triggered remotely via a specially crafted HTML page. This flaw enables an attacker to cause heap corruption, which may lead to arbitrary code execution or other impacts depending on the browser's exploitation context. Multiple Chromium-based browsers are affected due to their use of the vulnerable V8 engine. The vulnerability has been exploited in the wild, indicating active threat usage.

Impact

Successful exploitation can lead to heap corruption in the affected browser's JavaScript engine, potentially allowing remote code execution or other malicious outcomes. Because the vulnerability is remotely exploitable via web content, it poses a significant risk to users of affected Chromium-based browsers.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Users and administrators should monitor official Google Chromium security advisories for updates and apply patches promptly once available. Until then, exercising caution with untrusted web content is advisable.

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

What to do

Description

Summary

Impact

Mitigation

Weaknesses

References

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 09:26:16 UTC

Weaknesses

References

Related threats