What is CVE-2018-4171?

CVE-2018-4171 is a medium-severity vulnerability in Apple Mac OS X, classified under Information Disclosure. CVSS score: 5.5/10. Published 2018-06-08.

How severe is CVE-2018-4171?

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

Information disclosure in Apple Mac OS X

CVE-2018-4171

An issue was discovered in certain Apple products. macOS before 10.13.5 is affected. The issue involves the "Bluetooth" component. It allows attackers to obtain sensitive kernel memory-layout information via a crafted app that leverages device properties.

Vulnerability class: Information Disclosure

Published 2018-06-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.010 (61.5th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 61st percentile — 61.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Apple Mac OS X

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

www.securitytracker.com/id/1041027 (VDB Entry, Third Party Advisory, vdb-entry)
support.apple.com/HT208849 (Vendor Advisory)

Frequently asked questions

What is CVE-2018-4171?: CVE-2018-4171 is a medium-severity vulnerability in Apple Mac OS X, classified under Information Disclosure. CVSS score: 5.5/10. Published 2018-06-08.
How severe is CVE-2018-4171?: Medium severity. CVSS v3 base score is 5.5 out of 10.