CVE-2021-30533

Known Exploited Public Exploit

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 6.19% Top 10%
KEV Since 
Vendor Advisory gentoo.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory googleblog.com Vendor Advisory crbug.com
Affected: Google Chrome
Published at:
Updated at:

References

Link Tags
https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html release notes vendor advisory
https://crbug.com/1145553 patch exploit vendor advisory issue tracking
https://security.gentoo.org/glsa/202107-06 third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/ vendor advisory mailing list release notes
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/ vendor advisory mailing list release notes

Frequently Asked Questions

What is the severity of CVE-2021-30533?
CVE-2021-30533 has been scored as a medium severity vulnerability.
How to fix CVE-2021-30533?
To fix CVE-2021-30533, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-30533 being actively exploited in the wild?
It is confirmed that CVE-2021-30533 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-30533?
CVE-2021-30533 affects Google Chrome.
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