CVE-2016-4586

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-07-22 · updated 2026-06-17
Weakness: CWE-119

Description

WebKit in Apple Safari before 9.1.2 and 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.

Affected products

Apple Safari: before 9.1.2 — fixed in 9.1.2
Apple tvOS: before 9.2.2 — fixed in 9.2.2

How to fix

Upgrade to a fixed version: Apple Safari 9.1.2; Apple tvOS 9.2.2. Check the vendor advisory for mitigations.

References

http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.html
http://lists.apple.com/archives/security-announce/2016/Jul/msg00004.html
http://packetstormsecurity.com/files/138502/WebKitGTK-SOP-Bypass-Information-Disclosure.html
http://www.securityfocus.com/archive/1/539295/100/0/threaded
http://www.securityfocus.com/bid/91827
http://www.securitytracker.com/id/1036343
https://support.apple.com/HT206900
https://support.apple.com/HT206905
http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.html
http://lists.apple.com/archives/security-announce/2016/Jul/msg00004.html
http://packetstormsecurity.com/files/138502/WebKitGTK-SOP-Bypass-Information-Disclosure.html
http://www.securityfocus.com/archive/1/539295/100/0/threaded

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