Live › vulnerability › CVE-2021-21193
Go to dashboardA use-after-free bug in Chromium's Blink rendering engine lets a remote attacker corrupt heap memory by serving a crafted HTML page. Chromium-based browsers such as Chrome, Edge and Opera are affected, and CISA lists it as 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 Blink | vendor | – | – |
Open the browser's version page (chrome://version or edge://version) and compare against the fixed version.
Update the browser to a Chromium release that includes the vendor's fix for CVE-2021-21193, per vendor instructions.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Google Chromium Blink contains a use-after-free 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-2021-21193")
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.