What is CVE-2016-4768?

CVE-2016-4768 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 2016-09-25.

How severe is CVE-2016-4768?

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

Buffer overflow in Apple Iphone OS

CVE-2016-4768

WebKit in Apple iOS before 10, tvOS before 10, iTunes before 12.5.1 on Windows, and Safari before 10 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, a different vulnerability than CVE-2016-4759, CVE-2016-4765, CVE-2016-4766, and CVE-2016-4767.

Vulnerability class: Buffer Overflow

Published 2016-09-25 · 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: 0.021 (80.7th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 80.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000

Affected products

Weakness classification (CWE)

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

References

lists.apple.com/archives/security-announce/2016/Sep/msg00008.html (vendor-advisory, Mailing List, Vendor Advisory)
support.apple.com/HT207157 (Vendor Advisory)
support.apple.com/HT207158 (Vendor Advisory)
www.securityfocus.com/bid/93067 (VDB Entry, Third Party Advisory, vdb-entry)
lists.apple.com/archives/security-announce/2016/Sep/msg00011.html (vendor-advisory, Mailing List, Vendor Advisory)
www.securitytracker.com/id/1036854 (VDB Entry, Third Party Advisory, vdb-entry)
support.apple.com/HT207142 (Vendor Advisory)
support.apple.com/HT207143 (Vendor Advisory)
lists.apple.com/archives/security-announce/2016/Sep/msg00012.html (vendor-advisory, Mailing List, Vendor Advisory)
lists.apple.com/archives/security-announce/2016/Sep/msg00007.html (vendor-advisory, Mailing List, Vendor Advisory)

Frequently asked questions

What is CVE-2016-4768?: CVE-2016-4768 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 2016-09-25.
How severe is CVE-2016-4768?: High severity. CVSS v3 base score is 8.8 out of 10.