CVE-2019-8601

HIGH

Apple iCloud < 7.12 - Memory Corruption via Malicious Web Content

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-8601. PoCs published by BadAccess11.

AI-analyzed exploit summary This repository contains a proof-of-concept exploit for CVE-2019-8601, a WebKit vulnerability involving an integer overflow in the DFG JIT compiler's `compileNewArrayWithSpread` function. The exploit demonstrates how to achieve arbitrary code execution by corrupting array butterflies to gain read/write primitives.

Description

Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1, Safari 12.1.1, iTunes for Windows 12.9.5, iCloud for Windows 7.12. Processing maliciously crafted web content may lead to arbitrary code execution.

Exploits (1)

nomisec WORKING POC 17 stars
by BadAccess11 · poc
https://github.com/BadAccess11/CVE-2019-8601

This repository contains a proof-of-concept exploit for CVE-2019-8601, a WebKit vulnerability involving an integer overflow in the DFG JIT compiler's `compileNewArrayWithSpread` function. The exploit demonstrates how to achieve arbitrary code execution by corrupting array butterflies to gain read/write primitives.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Complex
Reliability
Reliable
Target: WebKit (JavaScriptCore)
No auth needed
Prerequisites: Target running a vulnerable version of WebKit · Ability to execute JavaScript in the target environment
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (8)

Core 8
Core References
Vendor Advisory x_refsource_misc
https://support.apple.com/HT210118
Vendor Advisory x_refsource_misc
https://support.apple.com/HT210119
Vendor Advisory x_refsource_misc
https://support.apple.com/HT210120
Vendor Advisory x_refsource_misc
https://support.apple.com/HT210123
Vendor Advisory x_refsource_misc
https://support.apple.com/HT210124
Vendor Advisory x_refsource_misc
https://support.apple.com/HT210125
Vendor Advisory x_refsource_misc
https://support.apple.com/HT210212
Vendor Advisory x_refsource_misc
https://support.apple.com/HT210122

Scores

CVSS v3 8.8
EPSS 0.0956
EPSS Percentile 93.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-190 CWE-787
Status published
Products (7)
apple/icloud < 7.12
apple/iphone_os < 12.3
apple/itunes < 12.9.5
apple/mac_os_x < 10.14.5
apple/safari < 12.1.1
apple/tvos < 12.3
apple/watchos < 5.2.1
Published Dec 18, 2019
Tracked Since Feb 18, 2026