What is CVE-2026-20684?

CVE-2026-20684 is a low-severity vulnerability in Apple macOS, classified under Improper Access Control. CVSS score: 3.3/10. Published 2026-03-25.

How severe is CVE-2026-20684?

Low severity. CVSS v3 base score is 3.3 out of 10.

Vulnerability in Apple macOS

CVE-2026-20684

A permissions issue was addressed with additional restrictions. This issue is fixed in macOS Tahoe 26.4. An app may bypass Gatekeeper checks.

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

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.001 (2.2th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: 0.000

Affected products

Apple macOS — versions 0

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

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

Frequently asked questions

What is CVE-2026-20684?: CVE-2026-20684 is a low-severity vulnerability in Apple macOS, classified under Improper Access Control. CVSS score: 3.3/10. Published 2026-03-25.
How severe is CVE-2026-20684?: Low severity. CVSS v3 base score is 3.3 out of 10.