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Findings

CVE-2021-4102

Google Chromium V8 Use-After-Free Vulnerability

Published Dec 15, 2021 · updated Jun 16, 2026 · google chrome

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.

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.

Required action

Apply updates per vendor instructions.

CISA due date Dec 29, 2021

Affected

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

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

References