What is CVE-2018-4235?

CVE-2018-4235 is a medium-severity vulnerability in Apple Tv, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.5/10. Published 2018-06-08.

How severe is CVE-2018-4235?

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

Vulnerability in Apple Tv

CVE-2018-4235

An issue was discovered in certain Apple products. iOS before 11.4 is affected. macOS before 10.13.5 is affected. tvOS before 11.4 is affected. watchOS before 4.3.1 is affected. The issue involves the "Messages" component. It allows local users to perform impersonation attacks via an unspecified injection.

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:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (38.0th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-74 — Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

References

support.apple.com/HT208850 (Vendor Advisory)
support.apple.com/HT208851 (Vendor Advisory)
www.securitytracker.com/id/1041027 (VDB Entry, Third Party Advisory, vdb-entry)
support.apple.com/HT208848 (Vendor Advisory)
support.apple.com/HT208849 (Vendor Advisory)

Frequently asked questions

What is CVE-2018-4235?: CVE-2018-4235 is a medium-severity vulnerability in Apple Tv, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 5.5/10. Published 2018-06-08.
How severe is CVE-2018-4235?: Medium severity. CVSS v3 base score is 5.5 out of 10.