Chrome is a widely used browser; an RCE in the DOM that executes via crafted web content can affect many users and enterprise environments and warrants broad attention.
CVE-2026-76021
Use-after-free in Chrome DOM allows remote code execution via crafted HTML.
Is CVE-2026-76021 being exploited?
Not confirmed. CVE-2026-76021 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.45% probability of exploitation in the next 30 days.
How severe is CVE-2026-76021?
CVE-2026-76021 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-76021?
Yes. A fix has been recorded for CVE-2026-76021. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-76021 affect?
CVE-2026-76021 affects Google Chrome < 151.0.7922.173 (Windows/macOS/Linux), Chromium-based browsers sharing same code. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-76021?
Update Chrome to 151.0.7922.173 or later immediately
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution in Chrome's DOM via crafted HTML, enabling arbitrary code execution inside the browser sandbox and potential host compromise.
Immediate action required
- affected< 151.0.7922.173
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.