What is CVE-2017-7083?

CVE-2017-7083 is a medium-severity vulnerability in Apple Iphone OS, classified under Improper Input Validation. CVSS score: 4.9/10. Published 2017-10-23.

How severe is CVE-2017-7083?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Improper input validation in Apple Iphone OS

CVE-2017-7083

An issue was discovered in certain Apple products. iOS before 11 is affected. macOS before 10.13 is affected. tvOS before 11 is affected. watchOS before 4 is affected. The issue involves the "CFNetwork Proxies" component. It allows remote attackers to cause a denial of service.

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

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

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.016 (74.4th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 74.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.securityfocus.com/bid/100992 (VDB Entry, Third Party Advisory, vdb-entry)
support.apple.com/HT208144 (Vendor Advisory)
www.securitytracker.com/id/1039427 (VDB Entry, Third Party Advisory, vdb-entry)
support.apple.com/HT208113 (Vendor Advisory)
support.apple.com/HT208112 (Vendor Advisory)
support.apple.com/HT208115 (Vendor Advisory)

Frequently asked questions

What is CVE-2017-7083?: CVE-2017-7083 is a medium-severity vulnerability in Apple Iphone OS, classified under Improper Input Validation. CVSS score: 4.9/10. Published 2017-10-23.
How severe is CVE-2017-7083?: Medium severity. CVSS v3 base score is 4.9 out of 10.