Live › vulnerability › CVE-2021-21220
Go to dashboardA flaw in the V8 JavaScript engine used by Chromium browsers lets a remote attacker corrupt heap memory with a crafted HTML page. Successful exploitation can lead to arbitrary code execution in the browser.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Google Chromium V8 | vendor | – | – |
Open chrome://version (or edge://version, opera://about) and compare the version with the fixed release in the vendor advisory.
Update Google Chrome, Microsoft Edge, Opera and other Chromium-based browsers to a release that includes the vendor's V8 fix.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Google Chromium V8 Engine contains an improper input validation 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.
CISA required action: Apply updates per vendor instructions.
This page as .md · .json · in your agent: get_signal("CVE-2021-21220")
CISA KEV catalog, Creative Commons 0 · EPSS scores by FIRST, used with attribution · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.