HOMEVULNERABILITIESCVE-2020-6418
HIGHCISA KEVIN THE WILD

CVE-2020-6418

Published: November 3, 2021

EPSS:85.93%probability of exploitation in 30 daysPercentile:99.4th

Official Description

Google Chromium V8 Engine contains a type confusion vulnerability 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.

NVD Source

CISA KEV Advisory

Google Chromium V8 Type Confusion Vulnerability

Google Chromium V8 Engine contains a type confusion vulnerability 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: 2021-11-03Federal patch deadline: 2022-05-03
Required Action (CISA)

Apply updates per vendor instructions.

Risk Analysis

A type confusion vulnerability in the Google Chromium V8 Engine could allow a remote attacker to exploit heap corruption via a specially crafted HTML page, potentially affecting multiple web browsers. The high EPSS score of 0.85930 indicates a very high likelihood of exploitation, making this a critical browser security issue.

This vulnerability is actively exploited in the wild and is part of CISA's KEV catalog, confirming its use by attackers. It is remotely exploitable.

Recommended Action

Ensure all web browsers utilizing the Chromium V8 Engine, such as Google Chrome, Microsoft Edge, and Opera, are updated to their latest versions. Practice caution when visiting untrusted websites.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2020-6418 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2020-6418 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.

Affected Vendors & Products

Mentioned vendors (from description):
MicrosoftGoogle
CPE data not yet available in NVD for this CVE.

Exploit & PoC Resources

ACTIVE EXPLOITATIONConfirmed exploitation in the wild
External links open in a new tab. Always verify in a controlled environment before use.

All References (1)

Quick Facts

CVE IDCVE-2020-6418
SeverityHIGH
CISA KEVYES — Active Exploitation
ExploitIN THE WILD
EPSS (30d)85.93%
PublishedNov 3, 2021

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2020-6418 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
  • !CISA KEV: Federal agencies must patch per BOD 22-01 timeline
  • !Active exploitation confirmed — treat as P1
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.