What is CVE-2021-30533?

CVE-2021-30533 is a vulnerability in Google Chrome. Published 2021-06-07.

Is CVE-2021-30533 known to be exploited?

Yes. CVE-2021-30533 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-06-27), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.

Vulnerability in Google Chrome

CVE-2021-30533

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.

EPSS: 0.167 (95.1th percentile) — read the EPSS interpretation.

Affected products

Google Chrome — versions unspecified

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-06-27. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-07-18.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html (x_refsource_MISC)
crbug.com/1145553 (x_refsource_MISC)
GLSA-202107-06 (vendor-advisory, x_refsource_GENTOO)
FEDORA-2021-f94dadff78 (vendor-advisory, x_refsource_FEDORA)
FEDORA-2021-ca58c57bdf (vendor-advisory, x_refsource_FEDORA)

Frequently asked questions

What is CVE-2021-30533?: CVE-2021-30533 is a vulnerability in Google Chrome. Published 2021-06-07.
Is CVE-2021-30533 known to be exploited?: Yes. CVE-2021-30533 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-06-27), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.