CVE-2026-43728: Apple macOS

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

This issue was addressed through improved state management. This issue is fixed in macOS Tahoe 26.6. An attacker may be able to modify the state of the Keychain.

Affected products

• Apple macOS: from 26.0, before 26.6 (fixed in 26.6)

Published 2026-07-27. Last modified 2026-07-29.