CRITICALCVSS v3.1 9.6Actively exploited · CISA KEV since 2021-11-03Vulnerability
CVE-2021-37973
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.
Properties
- Euvd product
- Chrome
- Vulnerability name
- Google Chromium Portals Use-After-Free Vulnerability
- First seen
- 2025-10-21T23:25:29+00:00
- Cvss score
- 9.6
- Epss score
- 0.11735
- Last seen
- 2026-10-19T12:00:27+00:00
- Due date
- 2021-11-17
- Euvd assigner
- Chrome
- Retrieved at
- 2026-10-21T01:24:47+00:00
- Exploited euvd since
- 2021-11-03T00:00:00+00:00
- Src batch id
- epss_history-20261020T103617Z-728ddd
- Source url
- https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
- Date added
- 2021-11-03
- Score
- 9.6
- Euvd base score version
- 3.1
- Fetched at
- 2026-10-20T10:36:20+00:00
- Euvd vendor
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- In Signal since
- initial import (Sep 2026)
- Euvd base score
- 9.6
Related Entities (8)
AFFECTS_PRODUCT (5)
DESCRIBES (1)
HAS_WEAKNESS (1)
INVOLVES (1)
Explore deeper with Ninja Signal's threat intelligence graph