What is CVE-2016-4701?

CVE-2016-4701 is a medium-severity vulnerability in Apple Mac OS X, classified under Improper Input Validation. CVSS score: 6.2/10. Published 2016-09-25.

How severe is CVE-2016-4701?

Medium severity. CVSS v3 base score is 6.2 out of 10.

Improper input validation in Apple Mac OS X

CVE-2016-4701

Application Firewall in Apple OS X before 10.12 allows local users to cause a denial of service via vectors involving a crafted SO_EXECPATH environment variable.

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

Published 2016-09-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (25.6th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.6% 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 Mac OS X

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.securitytracker.com/id/1036858 (vdb-entry)
lists.apple.com/archives/security-announce/2016/Sep/msg00006.html (vendor-advisory, Mailing List)
www.securityfocus.com/bid/93055 (vdb-entry)
support.apple.com/HT207170 (Vendor Advisory)

Frequently asked questions

What is CVE-2016-4701?: CVE-2016-4701 is a medium-severity vulnerability in Apple Mac OS X, classified under Improper Input Validation. CVSS score: 6.2/10. Published 2016-09-25.
How severe is CVE-2016-4701?: Medium severity. CVSS v3 base score is 6.2 out of 10.