CVE-2016-4631

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.8% 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

ImageIO in Apple iOS before 9.3.3, OS X before 10.11.6, tvOS before 9.2.2, and watchOS before 2.2.2 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted TIFF file.

Affected products

Apple Iphone Os: before 9.3.3 — fixed in 9.3.3
macOS: before 10.11.6 — fixed in 10.11.6
Apple tvOS: before 9.2.2 — fixed in 9.2.2
Apple watchOS: before 2.2.2 — fixed in 2.2.2

How to fix

Upgrade to a fixed version: Apple Iphone Os 9.3.3; macOS 10.11.6; Apple tvOS 9.2.2; Apple watchOS 2.2.2. Check the vendor advisory for mitigations.

References

http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html
http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.html
http://lists.apple.com/archives/security-announce/2016/Jul/msg00002.html
http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.html
http://www.securityfocus.com/bid/91834
http://www.securitytracker.com/id/1036344
http://www.talosintelligence.com/reports/TALOS-2016-0171/
https://support.apple.com/HT206902
https://support.apple.com/HT206903
https://support.apple.com/HT206904
https://support.apple.com/HT206905
http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html

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