CVE-2026-19557
Use-after-free in Chrome for macOS allows sandbox escape from renderer.
Is CVE-2026-19557 being exploited?
Not confirmed. CVE-2026-19557 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-2026-19557?
CVE-2026-19557 is rated High with a CVSS score of 8.3. 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-2026-19557?
Yes. A fix has been recorded for CVE-2026-19557. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-19557 affect?
CVE-2026-19557 affects Google Chrome for macOS <151.0.7922.137. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-19557?
Update Chrome on macOS to 151.0.7922.137+ and monitor endpoints for suspicious activity.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Renderer compromise can be exploited via crafted HTML to escape Chrome sandbox and execute code on the macOS host.
Immediate action required
- affected< 151.0.7922.137
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.