CVE-2021-30533
6.5
MEDIUM
CVSS 3.1
EPSS 16.6% · 97th pctCISA KEV · Exploited in the wild
2021-06-07•Updated 2025-10-21•KEV 2022-06-27
CISA Known Exploited Vulnerabilities
Google Chromium PopupBlocker Security Bypass Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Added to KEV
2022-06-27
Remediation due
2022-07-18
Required action
Apply updates per vendor instructions.
CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2021-30533
Description
Insufficient policy enforcement in PopupBlocker in Google Chrome prior to 91.0.4472.77 allowed a remote attacker to bypass navigation restrictions via a crafted iframe.
Severity
CVSS 3.1 · CISA6.5 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:NSSVC · CISA-ADP
Exploitationactive
Automatableno
Technical impactpartial
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Chrome | unspecified to <91.0.4472.77 |
References
5 LinksRecord Details
Published
2021-06-07
Last updated
2025-10-21
Assigner (CNA)
Chrome
Credited to
-
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