What is CVE-2026-20633?

CVE-2026-20633 is a medium-severity vulnerability in Apple macOS, classified under Improper Link Resolution Before File Access. CVSS score: 5.5/10. Published 2026-03-25.

How severe is CVE-2026-20633?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Apple macOS

CVE-2026-20633

This issue was addressed with improved handling of symlinks. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. An app may be able to access user-sensitive data.

Published 2026-03-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.002 (10.1th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 10.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Apple macOS — versions 0

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

support.apple.com/en-us/126794 (Release Notes, Vendor Advisory)
support.apple.com/en-us/126795 (Release Notes, Vendor Advisory)
support.apple.com/en-us/126796 (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2026-20633?: CVE-2026-20633 is a medium-severity vulnerability in Apple macOS, classified under Improper Link Resolution Before File Access. CVSS score: 5.5/10. Published 2026-03-25.
How severe is CVE-2026-20633?: Medium severity. CVSS v3 base score is 5.5 out of 10.