Vulnerability record · CVE-2026-20620 · published 11 February 2026

CVE-2026-20620: Apple macos out-of-bounds read vulnerability

Apple · Macos

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.

7.7 CVSS 3.1 High EPSS 0.20% · top 90.9% CWE-125 · Out-of-bounds read

7.7CVSS 3.1 base score

0.20%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

3References

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Macos Apple

References

Link	Tags
https://support.apple.com/en-us/126348	Release NotesVendor Advisory
https://support.apple.com/en-us/126349	Release NotesVendor Advisory
https://support.apple.com/en-us/126350	Release NotesVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-20620), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.