CVE-2016-4631

HIGH

Apple iOS < 9.3.3, macOS < 10.11.6, tvOS < 9.2.2, watchOS < 2.2.2 - Remote Code Execution via Crafted TIFF File

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2016-4631. PoCs published by hansnielsen, l3onkers.

AI-analyzed exploit summary The repository contains a Makefile for a tweak named 'TIFFDisabler' but lacks actual exploit code or technical details about CVE-2016-4631. It appears to be a placeholder or incomplete project.

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.

Exploits (2)

nomisec STUB 10 stars
by hansnielsen · poc
https://github.com/hansnielsen/tiffdisabler

The repository contains a Makefile for a tweak named 'TIFFDisabler' but lacks actual exploit code or technical details about CVE-2016-4631. It appears to be a placeholder or incomplete project.

Classification
Stub 90%
Attack Type
Other
Complexity
Trivial
Reliability
Theoretical
Target: iOS (SpringBoard)
No auth needed
Prerequisites: iOS device with jailbreak · Theos toolchain
devstral-2 · analyzed Feb 18, 2026 Full analysis →
nomisec WORKING POC 1 stars
by l3onkers · poc
https://github.com/l3onkers/FuxiOS

This repository contains a functional Python-based exploit for CVE-2016-4631, which targets a vulnerability in iOS's network stack. The exploit crafts malformed IP/TCP packets with specific options to trigger the vulnerability, and includes network scanning capabilities to identify potential targets.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: iOS (versions affected by CVE-2016-4631)
No auth needed
Prerequisites: Root/administrator privileges · Python 3 with scapy and python-nmap libraries · Network access to target devices
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (11)

Core 11
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1036344
Mailing List, Vendor Advisory vendor-advisory x_refsource_apple
http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.html
Mailing List, Vendor Advisory vendor-advisory x_refsource_apple
http://lists.apple.com/archives/security-announce/2016/Jul/msg00002.html
Mailing List, Vendor Advisory vendor-advisory x_refsource_apple
http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.html
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/91834
Mailing List, Vendor Advisory vendor-advisory x_refsource_apple
http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html
Third Party Advisory x_refsource_misc
http://www.talosintelligence.com/reports/TALOS-2016-0171/
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT206905
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT206903
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT206902
Vendor Advisory x_refsource_confirm
https://support.apple.com/HT206904

Scores

CVSS v3 8.8
EPSS 0.0485
EPSS Percentile 90.9%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-119
Status published
Products (4)
apple/iphone_os < 9.3.3
apple/mac_os_x < 10.11.6
apple/tvos < 9.2.2
apple/watchos < 2.2.2
Published Jul 22, 2016
Tracked Since Feb 18, 2026