CVE-2016-4737

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-09-25 · updated 2026-06-17
Weakness: CWE-119

Description

WebKit in Apple iOS before 10, Safari before 10, tvOS before 10, and watchOS before 3 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.

Affected products

Apple Iphone Os: before 10.0 — fixed in 10.0
Apple Safari: before 10.0 — fixed in 10.0
Apple tvOS: through 10.0
Apple watchOS: before 3.0 — fixed in 3.0

How to fix

Upgrade to a fixed version: Apple Iphone Os 10.0; Apple Safari 10.0; Apple watchOS 3.0. Check the vendor advisory for mitigations.

References

http://lists.apple.com/archives/security-announce/2016/Sep/msg00007.html
http://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html
http://lists.apple.com/archives/security-announce/2016/Sep/msg00010.html
http://lists.apple.com/archives/security-announce/2016/Sep/msg00011.html
http://www.securityfocus.com/bid/93065
http://www.securitytracker.com/id/1036854
https://support.apple.com/HT207141
https://support.apple.com/HT207142
https://support.apple.com/HT207143
https://support.apple.com/HT207157
http://lists.apple.com/archives/security-announce/2016/Sep/msg00007.html
http://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html

Get alerted when CVE-2016-4737 or the next vulnerability affects your stack