What is CVE-2018-4397?

CVE-2018-4397 is a medium-severity vulnerability in Apple Support, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2019-04-03.

How severe is CVE-2018-4397?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Improper input validation in Apple Support

CVE-2018-4397

Analytics data was sent using HTTP rather than HTTPS. This was addressed by sending analytics data using HTTPS. This issue affected versions prior to Apple Support 2.4 for iOS.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2019-04-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.008 (55.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Apple Support
Apple Iphone OS
Apple Support App — versions Versions prior to: Apple Support for iOS 2.4

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

support.apple.com/kb/HT209117 (Vendor Advisory)

Frequently asked questions

What is CVE-2018-4397?: CVE-2018-4397 is a medium-severity vulnerability in Apple Support, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2019-04-03.
How severe is CVE-2018-4397?: Medium severity. CVSS v3 base score is 4.3 out of 10.