CVE-2020-6418
Published: November 3, 2021
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.
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.
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.
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.
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
Exploit & PoC Resources
All References (1)
Quick Facts
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