Live › vulnerability › CVE-2021-30551
Go to dashboardA type confusion bug in the Chromium V8 JavaScript engine lets a remote attacker corrupt heap memory using a crafted HTML page. It is listed as actively exploited in the wild.
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://version) and compare the Chromium version against the fixed release for CVE-2021-30551 in the vendor advisory; the sources do not give the fixed version.
Update Google Chrome, Microsoft Edge, Opera and other Chromium-based browsers to the vendor-patched release, as CISA directs.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Google Chromium V8 Engine contains a type confusion 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-2021-30551")
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.