What is CVE-2018-4106?

CVE-2018-4106 is a high-severity vulnerability in Apple Mac OS X, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.8/10. Published 2018-04-03.

How severe is CVE-2018-4106?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Apple Mac OS X

CVE-2018-4106

An issue was discovered in certain Apple products. macOS before 10.13.4 is affected. The issue involves the Bracketed Paste Mode of the "Terminal" component. It allows user-assisted attackers to inject arbitrary commands within pasted content.

Published 2018-04-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.017 (75.9th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: -0.000

Affected products

Apple Mac OS X

Weakness classification (CWE)

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

References

support.apple.com/HT208692 (Vendor Advisory)
www.securityfocus.com/bid/103582 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1040608 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-4106?: CVE-2018-4106 is a high-severity vulnerability in Apple Mac OS X, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.8/10. Published 2018-04-03.
How severe is CVE-2018-4106?: High severity. CVSS v3 base score is 8.8 out of 10.