CVE-2026-20620

State: Published
Severity: 7.7 High
Published: Feb 11, 2026
Updated: Apr 2, 2026
Reserved: Nov 11, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	7.7 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H	CISA-ADP

Weaknesses

CWE-125 Out-of-bounds Read

Affected Products

Product	Versions
macOSApple	before 14.8.4Affected before 15.7.4Affected before 26.3Affected

References

https://support.apple.com/en-us/126348
https://support.apple.com/en-us/126349
https://support.apple.com/en-us/126350

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