What is CVE-2016-4686?

CVE-2016-4686 is a medium-severity vulnerability in Apple Iphone OS, classified under CWE-264. CVSS score: 4.4/10. Published 2017-02-20.

How severe is CVE-2016-4686?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Vulnerability in Apple Iphone OS

CVE-2016-4686

An issue was discovered in certain Apple products. iOS before 10.1 is affected. The issue involves the "Contacts" component, which does not prevent an app's Address Book access after access revocation.

Published 2017-02-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (22.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.9% 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 Iphone OS

Weakness classification (CWE)

CWE-264

References

support.apple.com/HT207271 (Vendor Advisory)
www.securitytracker.com/id/1037088 (vdb-entry)
www.securityfocus.com/bid/93848 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2016-4686?: CVE-2016-4686 is a medium-severity vulnerability in Apple Iphone OS, classified under CWE-264. CVSS score: 4.4/10. Published 2017-02-20.
How severe is CVE-2016-4686?: Medium severity. CVSS v3 base score is 4.4 out of 10.