What is CVE-2016-4588?

CVE-2016-4588 is a high-severity vulnerability in Apple tvOS, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2016-07-22.

How severe is CVE-2016-4588?

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

Buffer overflow in Apple tvOS

CVE-2016-4588

WebKit in Apple tvOS before 9.2.2 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.

Vulnerability class: Buffer Overflow

Published 2016-07-22 · 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: 0.019 (78.7th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · 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/Jul/msg00003.html (vendor-advisory, Mailing List, Vendor Advisory)
packetstormsecurity.com/files/138502/WebKitGTK-SOP-Bypass-Information-Disclosur… (VDB Entry, Third Party Advisory)
www.securityfocus.com/archive/1/539295/100/0/threaded (mailing-list, VDB Entry, Third Party Advisory)
support.apple.com/HT206905 (Vendor Advisory)

Frequently asked questions

What is CVE-2016-4588?: CVE-2016-4588 is a high-severity vulnerability in Apple tvOS, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2016-07-22.
How severe is CVE-2016-4588?: High severity. CVSS v3 base score is 8.8 out of 10.