CVE-2021-37973CISA KEVEPSS p95.5%

CVE-2021-37973Google Chromium Portals Use-After-Free Vulnerability

Google / Chromium Portals

Description

Google Chromium Portals contains a use-after-free vulnerability that allows a remote attacker, who has compromised the renderer process, to potentially perform a sandbox escape via a crafted HTML page. This vulnerability affects web browsers that utilize Chromium, including Google Chrome and Microsoft Edge.

Scoring

EPSS11.73% probability of exploitation · percentile 95.5% · 2026-06-18T12:00:27Z

CISA KEV entry

Added to KEV: 2021-11-03

(incoming)1

TypeTargetConfidenceTier
KEVEntryGoogle Chromium Portals Use-After-Free Vulnerabilitykev-cve-2021-379730%live

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Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.