What is CVE-2016-4670?

CVE-2016-4670 is a low-severity vulnerability in Apple Iphone OS, classified under CWE-255. CVSS score: 3.3/10. Published 2017-02-20.

How severe is CVE-2016-4670?

Low severity. CVSS v3 base score is 3.3 out of 10.

Vulnerability in Apple Iphone OS

CVE-2016-4670

An issue was discovered in certain Apple products. iOS before 10.1 is affected. macOS before 10.12.1 is affected. The issue involves the "Security" component. It allows local users to discover lengths of arbitrary passwords by reading a log.

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

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (21.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.1% 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

Weakness classification (CWE)

CWE-255

References

support.apple.com/HT207271 (Vendor Advisory)
www.securityfocus.com/bid/94433 (VDB Entry, Third Party Advisory, vdb-entry)
support.apple.com/HT207275 (Vendor Advisory)

Frequently asked questions

What is CVE-2016-4670?: CVE-2016-4670 is a low-severity vulnerability in Apple Iphone OS, classified under CWE-255. CVSS score: 3.3/10. Published 2017-02-20.
How severe is CVE-2016-4670?: Low severity. CVSS v3 base score is 3.3 out of 10.