Vulnerability in Apple macOS

CVE-2026-20631

A logic issue was addressed with improved checks. This issue is fixed in macOS Tahoe 26.4. A user may be able to elevate privileges.

EPSS: 0.003 (22.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Apple Macos — versions 0

References

product-security@apple.com (Vendor Advisory)

Frequently asked questions

What is CVE-2026-20631?: CVE-2026-20631 is a high-severity vulnerability in Apple macOS. CVSS score: 8.8/10. Published 2026-03-25.
How severe is CVE-2026-20631?: High severity. CVSS v3 base score is 8.8 out of 10.