Coverage › CVE-2021-30533
CVE-2021-30533 Unmapped
Google Chromium PopupBlocker Security Bypass Vulnerability
- Vendor / product
- Google — Chromium PopupBlocker
- Description (CISA)
- 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.
- Added to KEV
- 2022-06-27
- Due date
- 2022-07-18
- Required action
- Apply updates per vendor instructions.
- Known ransomware use
- Unknown
- CWE
- CWE-863
- CISA notes
- https://nvd.nist.gov/vuln/detail/CVE-2021-30533
- Elsewhere
- cve.org · NVD · CISA KEV · JSON
ATT&CK techniques
No public source states how this vulnerability is exploited in ATT&CK terms.
The only authoritative CVE → ATT&CK mapping in the open — CTID's Mappings Explorer, pinned to a KEV snapshot of 2025-07-28 and ATT&CK 16.1 — does not include CVE-2021-30533. CISA's catalogue carries no technique field. kevmap does not infer techniques from the CWE (CWE-863) — here is why — and does not guess.
This page will change state automatically if a mapping is published. What is shown above is everything CISA publishes about the entry.