CVE-2021-30563

Timeline

Detection, updates, and resolution for this record.

1. Aug 3, 2021 · Catalog

   Detected

   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.

2. Nov 3, 2021 · CISA KEV

   Known exploited

   Apply updates per vendor instructions.

3. Nov 17, 2021 · CISA KEV

   Remediation due

   Apply updates per vendor instructions.

4. Jun 16, 2026 · Catalog

   Updated

   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.

Affected

• cpe google/chromeversion unspecified
• vendor Google Chromium V8version unspecified

Sources

• CISA KEVCVE-2021-30563

  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.gov
• CVE.orgCVE-2021-30563

  Official CVE identifier

  cve.org
• FIRST EPSSCVE-2021-30563

  30-day exploitation probability 9.0%

  first.org
• NIST NVDCVE-2021-30563

  Type Confusion in V8 in Google Chrome prior to 91.0.4472.164 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

  nvd.nist.gov

References

• Release Notes · chromereleases.googleblog.com
• Permissions Required · crbug.com
• CISA note · nvd.nist.gov
• US Government Resource · cisa.gov