APPLE MACOS · CVE-2026-39877 · Vendor
FIX → 15.7.8 · 14.8.8
CVE-2026-39877 is a memory corruption flaw in Apple's IOSkywalkFamily component, fixed in iOS 18.7.10 and iPadOS 18.7.10. Per Apple's advisory, an app may be able to disclose kernel memory.
first public Jul 27, 2026 · 2 sources
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Devices on the affected iOS or iPadOS 18 builds that run a malicious or compromised app. The advisory lists iPhone XS, iPhone XS Max, iPhone XR and iPad 7th generation. Only a device on an older build is exposed; a device already on 18.7.10 or later is not.
Not affected if already-updated
Who cares apple, ios, ipad, ipados, iphone, vendor-advisory
18.7.10Upgrade to 15.7.8 · 14.8.8
18.7.10 or later, per Apple's advisoryAbout the security content of iOS 18.7.10 and iPadOS 18.7.10 - Apple Support
This update delivers security fixes that were first made available in the iOS 26.6 and 27 and iPadOS 26.6 and 27 betas. This document describes the security content of iOS 18.7.10 and iPadOS 18.7.10.
For our customers' protection, Apple doesn't disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security releases page.
Apple security documents reference vulnerabilities by CVE-ID when possible.
For more information about security, see the Apple Product Security page.
Released August 17, 2026
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: An attacker with physical access may be able to access sensitive user data during iPhone Mirroring
Description: This issue was addressed through improved state management.
CVE-2026-64732: Jorge Welch (@jorgwelch)
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: A malicious application may be able to bypass Privacy preferences
Description: An authorization issue was addressed with improved state management.
CVE-2026-65404: 이재영, Vinay Kumar Rasala (Xplo8E) from Appknox, Stuart Wallace, Arni Hardarson (Neonix Security)
Entry added September 14, 2026
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Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: An attacker in a privileged network position may be able to cause a denial-of-service
Description: A reachable assertion was addressed with improved input validation.
CVE-2026-43667: Arash Ale Ebrahim from SCy-Phy research group of CISPA Helmholtz Center for Information Security
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: A remote user may be able to cause unexpected system termination or corrupt kernel memory
Description: The issue was addressed with improved memory handling.
CVE-2026-64695: Narendra Singh (@_3P1C), Peter Malone
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: An app may be able to access sensitive user data
Description: This issue was addressed with improved checks.
CVE-2026-43801: Rahul Raj
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: Processing a maliciously crafted file may lead to unexpected app termination or arbitrary code execution
Description: A buffer overflow was addressed with improved bounds checking.
CVE-2026-43776: Peter Malone, Nicolas Rabrenovic, Irvin Wang, Rishabh Jain (rjcyber) of cyberplanet
Entry updated September 14, 2026
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: An app may be able to cause a denial-of-service
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2026-64725: Seonung Park, ALTV!ST (altvi.st/)
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: A website may be able to determine a user's IP address with Private Relay turned on
Description: An information disclosure issue was addressed with improved state management.
CVE-2026-65355: Xint Code
Entry added September 14, 2026
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: An app may be able to execute arbitrary code with kernel privileges
Description: A buffer overflow was addressed with improved size validation.
CVE-2026-64747: Franco Belman at Blackwing Intelligence
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: An app may be able to cause unexpected system termination
Description: An out-of-bounds read was addressed with improved bounds checking.
CVE-2026-64762: Franco Belman at Blackwing Intelligence, Dun
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: An app may be able to delete files for which it does not have permission
Description: A permissions issue was addressed with improved validation.
CVE-2026-64707: YingQi Shi (@Mas0nShi) of DBAppSecurity's WeBin lab
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: An app may be able to modify protected parts of the file system
Description: A race condition was addressed with improved checks.
CVE-2026-43811: Rodolphe Brunetti (@eisw0lf) of Lupus Nova
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: An app may be able to add contacts without user authorization
Description: An authorization issue was addressed with improved validation.
CVE-2026-64746: Rodolphe Brunetti (@eisw0lf) of Lupus Nova, Daniel Febrero
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: Processing a maliciously crafted contact may leak sensitive data
Description: The issue was addressed with improved checks.
CVE-2026-64734: Daniel Williams
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: An app may be able to access information about a user's contacts
CVE-2026-43797: Arni Hardarson (Neonix Security)
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: Processing a maliciously crafted audio file may corrupt process memory
Description: The issue was addressed with improved memory handling.
CVE-2026-43673: Anonymous working with TrendAI Zero Day Initiative
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: Processing an audio stream in a maliciously crafted media file may terminate the process
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2026-43744: ret2happy, Mathis Mansière, an anonymous researcher
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: A remote attacker may be able to cause unexpected system termination
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2026-43803: Rahul Raj
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: Processing a maliciously crafted video file may lead to unexpected app termination
Description: A memory corruption issue was addressed with improved memory handling.
CVE-2026-43711: James Duffy (@0x4A616D657344)
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: Processing a maliciously crafted asset catalog may result in disclosure of process memory
Description: The issue was addressed with improved memory handling.
CVE-2026-43738: Peter Malone
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: An app may be able to cause a denial of service
Description: A buffer overflow was addressed with improved bounds checking.
CVE-2026-84489: stratan (@5tratan), Peter Malone
Entry added September 14, 2026
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: An app may be able to cause unexpected system termination
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2026-43802: an anonymous researcher
Available for: iPhone XS, iPhone XS Max, iPhone XR, iPad 7th generation
Impact: Authentication credentials may be sent to a server on another origin
Description: This is a vulnerability in open source code and Apple Software is among the affected projects. The CVE-ID was assigned by a third party. Learn more about the issue and CVE-ID at cve.org.
Available for: iPhone XS, iPhone XS Max
This page as .md · .json · CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.