Risk Letters

Exploited vulnerability

CVE-2021-30533

TLP:CLEAR

Google Chromium PopupBlocker Security Bypass Vulnerability

Google Chromium PopupBlocker contains an insufficient policy enforcement vulnerability that allows a remote attacker to bypass navigation restrictions via a crafted iframe. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

Facts

  • Vendor: Google
  • Product: Chromium PopupBlocker
  • CVSS: 6.5
  • EPSS (probability of exploitation within 30 days): 16.7 %
  • On CISA's Known Exploited Vulnerabilities list since: 27 June 2022
  • First known exploitation: 27 June 2022
  • CISA's deadline for US federal agencies: 18 July 2022
  • Weakness: CWE-863
  • First seen by Risk Letters: 27 June 2022

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD