CVE-2026-20620

HIGH | Platform: macOS | Changelog

CVE Details

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.

CVSS 3.1 Score

Metric	Value
Base Score	7.7 (HIGH)
Vector	`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H`

Weakness

CWE-125

References

Apple Security Advisory
NVD Entry
https://support.apple.com/en-us/126348 (Release Notes, Vendor Advisory)
https://support.apple.com/en-us/126349 (Release Notes, Vendor Advisory)