CVE-2021-21132
Critical
Published: 09 February 2021
Published
09 February 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1
9.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS Score
0.2109
95.8th percentile
Risk Priority
32
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-21132 is a critical-severity Improper Restriction of Rendered UI Layers or Frames (CWE-1021) vulnerability in Google Chrome. Its CVSS base score is 9.6 (Critical).
Operationally, ranked in the top 4.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-8523
Vulnerability details
Inappropriate implementation in DevTools in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially perform a sandbox escape via a crafted Chrome Extension.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
google
chrome
≤ 88.0.4324.96
microsoft
edge chromium
≤ 88.0.705.50
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.