CVE-2021-21224

HIGHNVD 8.89.0▲Trending — 5 sources updated this weekExploited in the wild

8.8

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.

CVSS v3: 8.8
EG Score: 9.0(high)
EPSS: 97.5%
KEV: ⚠ Exploited

Published

April 26, 2021

Last Modified

October 24, 2025

Advisory Details (7)

Auto-updated Jun 1, 2026

⚠️ Active exploitation confirmed. No patch confirmed yet.

generic

[SECURITY] Fedora 32 Update: chromium-90.0.4430.93-1.fc32 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG/

generic

https://crbug.com/1195777

generic🔴 Active Exploitation

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_20.html

generic

[SECURITY] [DSA 4906-1] chromium security update

https://www.debian.org/security/2021/dsa-4906

generic

Chromium, Google Chrome: Multiple vulnerabilities (GLSA 202104-08) — Gentoo security

https://security.gentoo.org/glsa/202104-08

generic

[SECURITY] Fedora 34 Update: chromium-90.0.4430.93-1.fc34 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A/

generic

[SECURITY] Fedora 33 Update: chromium-90.0.4430.93-1.fc33 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-843Access of Resource Using Incompatible Type (Type Confusion)

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Microsoft MSRCCVE-2021-212242021-04-22
Chromium: CVE-2021-21224 Type Confusion in V8

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-03 19:45 UTCEG score recompute
2026-06-03 19:45 UTCVendor advisory
2026-06-03 19:45 UTCGHSA enrichment
2026-06-03 19:09 UTCkev_newly_listed
2026-06-03 15:31 UTCEG score recompute
2026-06-03 15:31 UTCVendor advisory
2026-06-03 15:31 UTCGHSA enrichment
2026-06-03 11:17 UTCEG score recompute
2026-06-03 11:17 UTCVendor advisory
2026-06-03 11:17 UTCGHSA enrichment
2026-06-03 07:03 UTCEG score recompute
2026-06-03 07:03 UTCVendor advisory
2026-06-03 07:03 UTCGHSA enrichment
2026-06-03 02:49 UTCEG score recompute
2026-06-03 02:49 UTCVendor advisory
2026-06-03 02:49 UTCGHSA enrichment
2026-06-02 22:35 UTCEG score recompute
2026-06-02 22:35 UTCVendor advisory
2026-06-02 22:35 UTCGHSA enrichment
2026-06-02 20:11 UTCepss_batch

Frequently asked(6)

What is CVE-2021-21224?

CVE-2021-21224 is a high vulnerability published on April 26, 2021. 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.

When was CVE-2021-21224 disclosed?

CVE-2021-21224 was first published in the National Vulnerability Database on April 26, 2021, with the most recent update on October 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-21224 actively exploited?

Yes. CISA added CVE-2021-21224 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Google Chromium V8. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

What is the CVSS score of CVE-2021-21224?

CVE-2021-21224 has a CVSS v3 base score of 8.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.

Which products are affected by CVE-2021-21224?

CVE-2021-21224 affects Google Chromium V8. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2021-21224?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-21224, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-21224

Explore →

Is Your Infrastructure Affected by CVE-2021-21224?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2021-21224

Published

Last Modified

Advisory Details (7)

[SECURITY] Fedora 32 Update: chromium-90.0.4430.93-1.fc32 - package-announce - Fedora mailing-lists

Chrome Releases: Stable Channel Update for Desktop

[SECURITY] [DSA 4906-1] chromium security update

Chromium, Google Chrome: Multiple vulnerabilities (GLSA 202104-08) — Gentoo security

[SECURITY] Fedora 34 Update: chromium-90.0.4430.93-1.fc34 - package-announce - Fedora mailing-lists

[SECURITY] Fedora 33 Update: chromium-90.0.4430.93-1.fc33 - package-announce - Fedora mailing-lists

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-21224?

Same vendor

Same CWE

CVE-2021-21224

📅 Published

🔄 Last Modified

📋 Advisory Details (7)

[SECURITY] Fedora 32 Update: chromium-90.0.4430.93-1.fc32 - package-announce - Fedora mailing-lists

Chrome Releases: Stable Channel Update for Desktop

[SECURITY] [DSA 4906-1] chromium security update

Chromium, Google Chrome: Multiple vulnerabilities (GLSA 202104-08) — Gentoo security

[SECURITY] Fedora 34 Update: chromium-90.0.4430.93-1.fc34 - package-announce - Fedora mailing-lists

[SECURITY] Fedora 33 Update: chromium-90.0.4430.93-1.fc33 - package-announce - Fedora mailing-lists

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-21224?

🔗 Related CVEs(same vendor + same CWE)

Same vendor

Same CWE

Published

Last Modified

Advisory Details (7)

Frequently asked(6)

Related CVEs(same vendor + same CWE)