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7.7 High

CVE-2026-20620 An out-of-bounds read issue was addressed with improved input validation

Description

An out-of-bounds read issue was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3. An attacker may be able to cause unexpected system termination or read kernel memory.

Affected products and versions

Product Affected versions Fixed in
macOS 26.3 earliest → < 26.3 26.3
macOS 15.7 earliest → < 15.7.4 15.7.4
macOS 14.8 earliest → < 14.8.4 14.8.4

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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