CVE-2020-6418VulnerabilityPublished 11/03/2021Updated 10/24/2026

CVE-2020-6418: 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: 78.8% chance of exploitation in 30 days – higher than 99% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2020-6418 (opens in a new tab)

Description

CVE-2020-6418 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. Exploitation of this flaw has been observed in the wild. No specific affected versions or patch information are provided in the input data.

Summary

The Google Chromium V8 engine contains a type confusion vulnerability (CWE-843) that can be triggered remotely via a crafted HTML page. This flaw may lead to heap corruption, enabling potential exploitation by attackers. Multiple Chromium-based browsers are impacted due to their use of the vulnerable V8 engine. The vulnerability has been exploited in the wild, indicating active threat. No patch or remediation details are included in the provided data.

Impact

Successful exploitation can lead to heap corruption, which may allow an attacker to execute arbitrary code or cause a denial of service in affected Chromium-based browsers. The vulnerability is actively exploited in the wild, increasing the risk to users of impacted 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.

Weaknesses

CWE-843Type Confusion (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 09:25:55 UTC

Weaknesses

References

Related threats