CVE-2026-43771: Apple macOS

High severity, CVSS 7.1. EPSS: 0.2% chance of exploitation in the next 30 days.

A stack overflow was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause a denial-of-service.

Affected products

• Apple macOS: from 14.0, before 14.8.8 (fixed in 14.8.8); from 15.0, before 15.7.8 (fixed in 15.7.8); from 26.0, before 26.6 (fixed in 26.6)

Published 2026-07-27. Last modified 2026-07-28.