Chrome is a ubiquitous browser; a sandbox-escaping RCE via extensions can lead to widespread endpoint compromise and enterprise disruption, warranting org-wide alerting.
CVE-2026-93373
Chrome use-after-free in extensions allows remote code execution outside the sandbox.
Is CVE-2026-93373 being exploited?
Not confirmed. CVE-2026-93373 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 0.30% probability of exploitation in the next 30 days.
How severe is CVE-2026-93373?
CVE-2026-93373 is rated Critical with a CVSS score of 9.6. 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-2026-93373?
Yes. A fix has been recorded for CVE-2026-93373. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-93373 affect?
CVE-2026-93373 affects Google Chrome (Desktop) prior to 153.0.8010.52, Chromium-based browsers may be affected. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-93373?
Update Chrome to 153.0.8010.52+ and remove untrusted extensions immediately.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote arbitrary code execution outside Chrome sandbox via crafted extension, enabling system compromise and persistent code execution.
Immediate action required
- affected< 153.0.8010.52
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.