Chrome WebAudio heap overflow could enable remote code execution across endpoints; widely used browser.
CVE-2026-4443
Heap overflow in Chrome WebAudio allows remote code execution.
Is CVE-2026-4443 being exploited?
Not confirmed. CVE-2026-4443 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 0.41% probability of exploitation in the next 30 days.
How severe is CVE-2026-4443?
CVE-2026-4443 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-2026-4443?
Yes. A fix has been recorded for CVE-2026-4443. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-4443 affect?
CVE-2026-4443 affects Google Chrome <146.0.7680.153, Chromium-based browsers with WebAudio. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-4443?
Update Chrome to 146.0.7680.153 or newer
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
RCE in Chrome sandbox via crafted HTML page; attacker may run arbitrary code on user device.
Immediate action required
- affected< 146.0.7680.153
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.