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6.2 Medium

CVE-2026-20699 A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions

Description

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 and versions

Product Affected versions Fixed in
macOS 26.4 earliest → < 26.4 26.4
macOS 26.3 earliest → < 26.3 26.3
macOS 15.7 earliest → < 15.7.5 15.7.5
macOS 14.8 earliest → < 14.8.5 14.8.5

Other CVEs of macOS

The 3813 CVEs of macOS →
CVE-2026-86925 An authorization issue was addressed with improved state management 5.5 Medium CVE-2026-84627 A buffer overflow was addressed with improved bounds checking 7.8 High CVE-2026-113945 An out-of-bounds read was addressed with improved bounds checking 5.5 Medium CVE-2026-65327 A logic issue was addressed with improved checks 8.4 High
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