CVE-2021-21193: Google Chromium Blink Use-After-Free Vulnerability
CVE-2021-21193 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2021-11-03
A use-after-free vulnerability in the Blink engine of Google Chrome allows a remote attacker to potentially exploit heap corruption via a specially crafted HTML page. This vulnerability has been observed being exploited in the wild.
Yes. CVE-2021-21193 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2021-21193?
Critical severity, with a CVSS score of 8.8, published 3 November 2021.
Which products and versions are affected?
Google Chrome prior to 89.0.4389.90; Microsoft Edge; Opera Software Opera.
Is there a fix for CVE-2021-21193?
A patch was published on 2021-03-12: Stable channel update for desktop released. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2021-21193 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2021-21193?
Check whether you run Google Chromium Blink. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Affected products
Google Chrome prior to 89.0.4389.90
Microsoft Edge
Opera Software Opera
Timeline
2021-03-12: patched: Stable channel update for desktop released.
2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.