Is CVE-2021-30633 actively exploited?

CVE-2021-30633 has no public evidence of in-the-wild exploitation as of 2025-10-24.

What is the CVSS score for CVE-2021-30633?

CVE-2021-30633 has a CVSS score of 9.6 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

How do I patch CVE-2021-30633?

Patch guidance is available from google security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-30633.

Fix CVE-2021-30633 - CRITICAL google chrome

Q: Which products are affected by CVE-2021-30633?

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

Description

Use after free in Indexed DB API in Google Chrome prior to 93.0.4577.82 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: required
Scope: changed
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-416 · Use After Free CWE-416 · Use After Free

Metadata

Primary Vendor: GOOGLE
Published: 10/8/2021
Last Modified: 10/24/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2021-30633

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary