CVE-2021-38003

HIGHNVD 8.88.8—

8.8

Inappropriate implementation in V8 in Google Chrome prior to 95.0.4638.69 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 98.4%
KEV: ⚠ Exploited

Published

November 23, 2021

Last Modified

October 24, 2025

References (9)

chrome-cve-admin@googlehttps://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html
chrome-cve-admin@googlehttps://crbug.com/1263462
chrome-cve-admin@googlehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744/
chrome-cve-admin@googlehttps://www.debian.org/security/2022/dsa-5046
af854a3a-2127-422b-91ae-364da2661108https://chromereleases.googleblog.com/2021/10/stable-channel-update-for-desktop_28.html
af854a3a-2127-422b-91ae-364da2661108https://crbug.com/1263462
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3W46HRT2UVHWSLZB6JZHQF6JNQWKV744/
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5046
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-38003

Weakness Classification(2)

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

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-2021-380032021-10-29
Chromium: CVE-2021-38003 Inappropriate implementation in V8

Data Freshness Timeline

(refreshed 12× in last 7d / 12× 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.

2026-05-27 20:35 UTCkev_newly_listed
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 19:13 UTCkev_newly_listed
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:10 UTCEG score recompute
2026-05-26 07:10 UTCVendor advisory
2026-05-26 07:10 UTCGHSA enrichment

Frequently asked(6)

What is CVE-2021-38003?

CVE-2021-38003 is a high vulnerability published on November 23, 2021. Inappropriate implementation in V8 in Google Chrome prior to 95.0.4638.69 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

When was CVE-2021-38003 disclosed?

CVE-2021-38003 was first published in the National Vulnerability Database on November 23, 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-2021-38003 actively exploited?

Yes. CISA added CVE-2021-38003 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-2021-38003?

CVE-2021-38003 has a CVSS v3 base score of 8.8 (NVD).

Which products are affected by CVE-2021-38003?

CVE-2021-38003 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-2021-38003?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-38003, 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-2021-38003

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