CVE-2021-30563: Google Chromium V8 Type Confusion Vulnerability

CVE-2021-30563 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2021-11-03

A type confusion vulnerability in the Google Chromium V8 engine allows a remote attacker to potentially execute arbitrary code or cause heap corruption via a specially crafted HTML page. This vulnerability affects Google Chrome and other Chromium-based browsers such as Microsoft Edge and Opera.

Technologies: Google Chromium V8. Vendors: Google.

Quick answers

Is CVE-2021-30563 exploited in the wild?
Yes. CVE-2021-30563 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2021-30563?
Critical severity, with a CVSS score of 8.8, published 3 November 2021.
Which products and versions are affected?
Google Chrome prior to 91.0.4472.164; Microsoft Edge; Opera Opera.
Is there a fix for CVE-2021-30563?
A patch was published on 2021-07-15: Fixed in Chrome version 91.0.4472.164 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2021-30563 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2021-30563?
Check whether you run Google Chromium V8. 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 91.0.4472.164
  • Microsoft Edge
  • Opera Opera

Timeline

  • 2021-07-15: patched: Fixed in Chrome version 91.0.4472.164
  • 2021-08-03: disclosed: NVD Published Date
  • 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2021-11-03: exploited: Reported as exploited in the wild

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