Is CVE-2021-30551 actively exploited?

CVE-2021-30551 has no public evidence of in-the-wild exploitation as of 2025-10-24.

What is the CVSS score for CVE-2021-30551?

CVE-2021-30551 has a CVSS score of 8.8 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

How do I patch CVE-2021-30551?

Patch guidance is available from google security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-30551.

Fix CVE-2021-30551 - HIGH google chrome

Q: Which products are affected by CVE-2021-30551?

3 products: google chrome, fedoraproject fedora, fedoraproject fedora.

Description

Type confusion in V8 in Google Chrome prior to 91.0.4472.101 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: required
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-843 CWE-843

Metadata

Primary Vendor: GOOGLE
Published: 6/15/2021
Last Modified: 10/24/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2021-30551

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary