CVE-2026-84558: Apple macOS

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

A double free issue was addressed with improved memory management. This issue is fixed in macOS Golden Gate 27. An app may be able to cause unexpected system termination.

Affected products

• Apple macOS: before 27.0 (fixed in 27.0)

Published 2026-09-14. Last modified 2026-09-17.