CVE-2021-30632: Google Chromium V8 Out-of-Bounds Write Vulnerability

CVE-2021-30632 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2021-11-03

An out-of-bounds write vulnerability in the Google Chromium V8 engine allows a remote attacker to exploit heap corruption via a specially crafted HTML page. This flaw impacts Google Chrome and other Chromium-based browsers such as Microsoft Edge and Opera.

Technologies: Google Chromium V8. Vendors: Google.

Quick answers

Is CVE-2021-30632 exploited in the wild?
Yes. CVE-2021-30632 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2021-30632?
Critical severity, with a CVSS score of 8.8, published 3 November 2021.
Which products and versions are affected?
Google Chrome prior to 93.0.4577.82; Google V8 Engine; Microsoft Edge; Opera Opera.
Is there a fix for CVE-2021-30632?
A patch was published on 2021-09-13: Google released Chrome version 93.0.4577.82 to address this vulnerability. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2021-30632 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2021-30632?
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 93.0.4577.82
  • Google V8 Engine
  • Microsoft Edge
  • Opera Opera

Timeline

  • 2021-09-13: patched: Google released Chrome version 93.0.4577.82 to address this vulnerability.
  • 2021-11-03: kev added: Added to CISA's Known Exploited Vulnerabilities Catalog.
  • 2021-11-03: disclosed: Publicly disclosed via NVD and CISA.

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