CVE-2016-4708

Severity: medium (CVSS 6.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.9% 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-200

Description

CFNetwork in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3 misparses the Set-Cookie header, which allows remote attackers to obtain sensitive information via a crafted HTTP response.

Affected products

Apple Iphone Os: before 10.0 — fixed in 10.0
macOS: before 10.12.0 — fixed in 10.12.0
Apple tvOS: before 10.0 — fixed in 10.0
Apple watchOS: before 3.0 — fixed in 3.0

How to fix

Upgrade to a fixed version: Apple Iphone Os 10.0; macOS 10.12.0; Apple tvOS 10.0; Apple watchOS 3.0. Check the vendor advisory for mitigations.

References

http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.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/93054
http://www.securitytracker.com/id/1036858
https://support.apple.com/HT207141
https://support.apple.com/HT207142
https://support.apple.com/HT207143
https://support.apple.com/HT207170
http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
http://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html

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