CVE-2021-30533

6.5 MEDIUM CISA KEV - Actively Exploited
Published: June 07, 2021 Modified: October 24, 2025
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html
Source: chrome-cve-admin@google.com
Release Notes Vendor Advisory
https://crbug.com/1145553
Source: chrome-cve-admin@google.com
Exploit Issue Tracking Patch Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
Source: chrome-cve-admin@google.com
Mailing List Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
Source: chrome-cve-admin@google.com
Mailing List Release Notes
https://security.gentoo.org/glsa/202107-06
Source: chrome-cve-admin@google.com
Third Party Advisory
https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes Vendor Advisory
https://crbug.com/1145553
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Issue Tracking Patch Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Release Notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Release Notes
https://security.gentoo.org/glsa/202107-06
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-30533
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

11 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.5 / 10.0
EPSS (Exploit Probability)
10.5%
93th percentile
Exploitation Status
Actively Exploited
Remediation due: 2022-07-18

Weaknesses (CWE)

CWE-863 CWE-863

Affected Vendors

fedoraproject google

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