What is CVE-2017-7146?

CVE-2017-7146 is a medium-severity vulnerability in Apple Iphone OS, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 5.3/10. Published 2017-10-23.

How severe is CVE-2017-7146?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Apple Iphone OS

CVE-2017-7146

An issue was discovered in certain Apple products. iOS before 11 is affected. The issue involves the "Security" component. It allows attackers to track users across installs via a crafted app that leverages Keychain data mishandling.

Published 2017-10-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.009 (56.9th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Apple Iphone OS

Weakness classification (CWE)

CWE-732 — Incorrect Permission Assignment for Critical Resource

References

www.securityfocus.com/bid/101000 (VDB Entry, Third Party Advisory, vdb-entry)
support.apple.com/HT208112 (Vendor Advisory)

Frequently asked questions

What is CVE-2017-7146?: CVE-2017-7146 is a medium-severity vulnerability in Apple Iphone OS, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 5.3/10. Published 2017-10-23.
How severe is CVE-2017-7146?: Medium severity. CVSS v3 base score is 5.3 out of 10.