CVE-2026-43783: Apple macOS

High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days.

A race condition was addressed with improved locking. This issue is fixed in macOS Tahoe 26.6. A malicious app may be able to gain root privileges.

Affected products

• Apple macOS: before 26.6 (fixed in 26.6)

Published 2026-09-14. Last modified 2026-09-15.