ACTIVELY EXPLOITED
CVE-2021-37973: Google Chromium Portals Use-After-Free Vulnerability
| Vendor | |
|---|---|
| Product | Chromium Portals |
| Actively exploited | Yes |
| Added to CISA KEV | 3 Nov 2021 |
| CISA federal deadline | 17 Nov 2021 |
| Weakness (CWE) | CWE-416 |
Required action (CISA's text)
Apply updates per vendor instructions.
Description (NVD)
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.
SOURCES
Other Google flaws
- CVE-2026-125350: Google Chromium Use-After-Free Vulnerability
- CVE-2026-111497: Google Brotli Unchecked Return Value Vulnerability
- CVE-2026-58704: Google Pixel Improper Authorization Vulnerability
- CVE-2026-87491: Google Chromium V8 Out of Bounds Write Vulnerability
- CVE-2026-85046: Google Chromium V8 Type Confusion Vulnerability
Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.