Google Chromium V8 Use-After-Free Vulnerability

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

How to fix CVE-2021-4102

• Recommended remediation

  Apply updates per vendor instructions. CISA due date Dec 29, 2021.

• Official advisories

  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • VulnCheck KEV · vulncheck.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Dec 15, 2021 · Catalog

   Detected

   Google Chromium V8 Engine 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.

2. Dec 15, 2021 · CISA KEV

   Known exploited

   Apply updates per vendor instructions.

3. Dec 29, 2021 · CISA KEV

   Remediation due

   Apply updates per vendor instructions.

4. Jun 16, 2026 · Catalog

   Updated

   Google Chromium V8 Engine 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.

Sources

• CISA KEVConfirmed exploitationCVE-2021-4102

  Google Chromium V8 Engine 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.gov
• CVE.orgVulnerability recordCVE-2021-4102

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2021-4102

  30-day exploitation probability 7.8%

  first.org
• NIST NVDVulnerability recordCVE-2021-4102

  Use after free in V8 in Google Chrome prior to 96.0.4664.110 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

  nvd.nist.gov
• VulnCheck KEVConfirmed exploitationCVE-2021-4102

  Google Chromium V8 Engine 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 Chrom

  vulncheck.com

References

• Release Notes · chromereleases.googleblog.com
• Third Party Advisory · crbug.com
• VulnCheck exploitation evidence · docs.google.com
• CISA note · nvd.nist.gov
• US Government Resource · cisa.gov
• VulnCheck exploitation evidence · cisa.gov

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.