CVE-2026-39870: Apple macOS

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

The issue was addressed with improved memory handling. This issue is fixed in macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5. Processing a maliciously crafted image may corrupt process memory.

Affected products

• Apple macOS: from 14.0, before 14.8.7 (fixed in 14.8.7); from 15.0, before 15.7.7 (fixed in 15.7.7); from 26.0, before 26.5 (fixed in 26.5)

Published 2026-05-11. Last modified 2026-06-17.