What is CVE-2016-7594?

CVE-2016-7594 is a high-severity vulnerability in Apple Iphone OS, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2017-02-20.

How severe is CVE-2016-7594?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Apple Iphone OS

CVE-2016-7594

An issue was discovered in certain Apple products. iOS before 10.2 is affected. macOS before 10.12.2 is affected. watchOS before 3.1.3 is affected. The issue involves the "ICU" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.

Vulnerability class: Buffer Overflow

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

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.018 (77.0th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

support.apple.com/HT207487
support.apple.com/HT207422
www.securityfocus.com/bid/94905 (vdb-entry)
www.securitytracker.com/id/1037469 (vdb-entry)
support.apple.com/HT207423

Frequently asked questions

What is CVE-2016-7594?: CVE-2016-7594 is a high-severity vulnerability in Apple Iphone OS, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2017-02-20.
How severe is CVE-2016-7594?: High severity. CVSS v3 base score is 8.8 out of 10.