CVE-2026-64737
macOS authorization flaw allows sandbox escape by malicious app.
Is CVE-2026-64737 being exploited?
Not confirmed. CVE-2026-64737 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 0.17% probability of exploitation in the next 30 days.
How severe is CVE-2026-64737?
CVE-2026-64737 is rated High with a CVSS score of 8.2. 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-2026-64737?
Yes. A fix has been recorded for CVE-2026-64737. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-64737 affect?
CVE-2026-64737 affects macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6, Mac desktops/laptops running these versions. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-64737?
Install Apple security updates on all macOS endpoints immediately.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
A local malicious app can escape the sandbox to access user data, execute code, and potentially escalate privileges.
Patch when possible
- affected< 14.8.8
- affected< 15.7.8
- affected< 26.6
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.