CVE-2021-21224
HighPublished
Google Chromium V8 Type Confusion Vulnerability
- Published
- Apr 26, 2021
- Updated
- Oct 21, 2025
- Assigning CNA
- Chrome
- Evidence observed
- Nov 3, 2021
Primary CVSS
8.8/ 10High
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H84.2%
High · next 30 days
- Percentile
- 99.7%
- Model date
- Oct 18, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
Type confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.
Sources
- chrome_v8_ndaysExploit
Chrome V8 n-day exploits that I've written.
Responsible use
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