CVE-2021-4078

HIGHNVD 8.88.8—

8.8

Type confusion in V8 in Google Chrome prior to 96.0.4664.93 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 81.8%
KEV: Not listed

Published

December 23, 2021

Last Modified

November 21, 2024

References (8)

chrome-cve-admin@googlehttps://chromereleases.googleblog.com/2021/12/stable-channel-update-for-desktop.html
chrome-cve-admin@googlehttps://crbug.com/1268738
chrome-cve-admin@googlehttps://security.gentoo.org/glsa/202208-25
chrome-cve-admin@googlehttps://www.debian.org/security/2022/dsa-5046
af854a3a-2127-422b-91ae-364da2661108https://chromereleases.googleblog.com/2021/12/stable-channel-update-for-desktop.html
af854a3a-2127-422b-91ae-364da2661108https://crbug.com/1268738
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202208-25
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5046

Weakness Classification(1)

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

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

Data Freshness Timeline

(refreshed 10× in last 7d / 19× 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.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 05:53 UTCEG score recompute
2026-05-26 05:53 UTCGHSA enrichment
2026-05-24 01:21 UTCOSV refresh

Frequently asked(5)

What is CVE-2021-4078?

CVE-2021-4078 is a high vulnerability published on December 23, 2021. Type confusion in V8 in Google Chrome prior to 96.0.4664.93 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

When was CVE-2021-4078 disclosed?

CVE-2021-4078 was first published in the National Vulnerability Database on December 23, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-4078 actively exploited?

CVE-2021-4078 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 81.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-4078?

CVE-2021-4078 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2021-4078?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-4078, 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

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CVE-2021-4078

📅 Published

🔄 Last Modified

🔗 References (8)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-4078?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (8)

Frequently asked(5)

Related CVEs(same CWE)