What is CVE-2019-8522?

CVE-2019-8522 is a medium-severity vulnerability in Apple macOS, classified under Missing Authentication for Critical Function. CVSS score: 5.5/10. Published 2019-12-18.

How severe is CVE-2019-8522?

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

Auth bypass in Apple macOS

CVE-2019-8522

A logic issue was addressed with improved state management. This issue is fixed in macOS Mojave 10.14.4. An encrypted volume may be unmounted and remounted by a different user without prompting for the password.

Vulnerability class: Broken Authentication

Published 2019-12-18 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.003 (15.3th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Apple macOS — versions unspecified
Apple Mac OS X

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

support.apple.com/HT209600 (Vendor Advisory)

Frequently asked questions

What is CVE-2019-8522?: CVE-2019-8522 is a medium-severity vulnerability in Apple macOS, classified under Missing Authentication for Critical Function. CVSS score: 5.5/10. Published 2019-12-18.
How severe is CVE-2019-8522?: Medium severity. CVSS v3 base score is 5.5 out of 10.