CVE-2026-20699: Apple macOS

Medium severity, CVSS 6.2. EPSS: 0.1% chance of exploitation in the next 30 days.

A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3, macOS Tahoe 26.4. An app may be able to access user-sensitive data.

Affected products

• Apple macOS: from 14.0, before 14.8.5 (fixed in 14.8.5); from 15.0, before 15.7.5 (fixed in 15.7.5); from 26.0, before 26.3 (fixed in 26.3)

Published 2026-03-25. Last modified 2026-06-17.