CVE-2021-30633
9.6
CRITICAL
CVSS 3.1
EPSS 33.2% · 98th pctCISA KEV · Exploited in the wild
2021-10-08•Updated 2025-10-21•KEV 2021-11-03
CISA Known Exploited Vulnerabilities
Google Chromium Indexed DB API Use-After-Free Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Added to KEV
2021-11-03
Remediation due
2021-11-17
Required action
Apply updates per vendor instructions.
CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2021-30633
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.
Severity
CVSS 3.1 · CISA9.6 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HSSVC · CISA-ADP
Exploitationactive
Automatableno
Technical impacttotal
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Chrome | unspecified to <93.0.4577.82 |
References
4 LinksRecord Details
Published
2021-10-08
Last updated
2025-10-21
Assigner (CNA)
Chrome
Credited to
-
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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.