APPLE IPADOS · CVE-2026-84603 · Other
FIX → 27.0
This is Apple's advisory page for watchOS 27, which lists many separate security flaws across system components. The excerpt does not isolate CVE-2026-84603 to a specific component, and the impacts listed range from app crashes to kernel memory writes and code execution.
first public Sep 14, 2026 · 2 sources
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About the security content of watchOS 27 - Apple Support
This document describes the security content of watchOS 27.
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 September 14, 2026
Available for: Apple Watch Series 9 and later
Impact: Processing a maliciously crafted image may lead to unexpected process termination
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2026-86882: Peter Malone
Available for: Apple Watch Series 9 and later
Impact: Processing a maliciously crafted image may lead to unexpected app termination
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2026-86918: Arni Hardarson (Neonix Security)
Entry added October 19, 2026
Available for: Apple Watch Series 9 and later
Impact: An app may be able to access sensitive user data
Description: This issue was addressed with improved data protection.
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CVE-2026-43664: Stuart Wallace, Ilya Andr (andrd3v), Rosyna Keller of Totally Not Malicious Software, CJ Vana, David Strnadel, Daniel Febrero, Asaf Cohen, Gongyu Ma (@Mezone0), Jian Lee (@speedyfriend433)
Available for: Apple Watch Series 9 and later
Impact: An app may be able to cause unexpected system termination or write kernel memory
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2026-84523: Cem Onat Karagun, an anonymous researcher
Available for: Apple Watch Series 9 and later
Impact: A local app may be able to read a persistent account identifier
Description: A permissions issue was addressed with additional restrictions.
CVE-2026-86888: Zhongcheng Li (CK01)
Available for: Apple Watch Series 9 and later
Impact: An app may be able to access sensitive user data
Description: A privacy issue was addressed with improved access restrictions.
CVE-2026-84582: Zhongcheng Li (CK01)
Entry added October 19, 2026
Available for: Apple Watch Series 9 and later
Impact: A malicious application may be able to leak sensitive user information
Description: An information disclosure issue was addressed with improved state management.
CVE-2026-84586: Prashan Samarathunge, Zhongcheng Li (CK01)
Available for: Apple Watch Series 9 and later
Impact: An app may be able to cause unexpected system termination
Description: A use after free issue was addressed with improved memory management.
CVE-2026-65407: Franco Belman at Blackwing Intelligence
Available for: Apple Watch Series 9 and later
Impact: An app may be able to leak sensitive user information
Description: A logic issue was addressed with improved checks.
CVE-2026-65339: Mustafa Calap (@ordinal0, dbg.re), Meta Red Team X - Nik Tsytsarkin
Available for: Apple Watch Series 9 and later
Impact: A local app may be able to read a persistent account identifier
Description: A permissions issue was addressed with additional restrictions.
CVE-2026-84583: Zhongcheng Li from IES Red Team
Available for: Apple Watch Series 9 and later
Impact: An app may be able to cause unexpected system termination
Description: The issue was addressed with improved checks.
CVE-2026-65410: Calif.io in collaboration with Claude and Anthropic Research
Available for: Apple Watch Series 9 and later
Impact: An app may be able to cause unexpected system termination
Description: A type confusion issue was addressed with improved memory handling.
CVE-2026-84616: Peter Malone
Available for: Apple Watch Series 9 and later
Impact: A sandboxed app may be able to execute arbitrary code with kernel privileges
Description: A race condition was addressed with improved state management.
CVE-2026-84607: Ruslan Dautov
Available for: Apple Watch Series 9 and later
Impact: A remote attacker may be able to cause unexpected app termination or arbitrary code execution
Description: An out-of-bounds write issue was addressed with improved bounds checking.
Available for: Apple Watch Series 9 and later
Impact: An app may gain unauthorized access to Bluetooth
Description: An authorization issue was addressed with improved state management.
CVE-2026-84560: an anonymous researcher
Available for: Apple Watch Series 9 and later
Impact: An attacker in radio range may be able to cause unexpected system termination
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2026-84613: jioundai
Entry added October 19, 2026
Available for: Apple Watch Series 9 and later
Impact: A local app may be able to read a persistent account identifier
Description: An information disclosure issue was addressed with improved state management.
CVE-2026-86895: Stanislav Jelezoglo
Available for: Apple Watch Series 9 and later
Impact: An app may be able to read device name
Description: A permissions issue was addressed with additional restrictions.
CVE-2026-86893: Heiner Gerdes
Available for: Apple Watch Series 9 and later
Impact: An archive may be able to bypass Gatekeeper
Description: A file quarantine bypass was addressed with additional checks.
CVE-2026-65399: Rishabh Jain (rjcyber) of cyberplanet, Pasquale Scola, an anonymous researcher
Available for: Apple Watch Series 9 and later
Impact: An app may be able to access Bluetooth device information
Description: An authorization issue was addressed with improved state management.
CVE-2026-86891: Dawuge of Shuffle Team
Impact: Processing a maliciously crafted Bluetooth packet may result in disclosure of process memory
CVE-2026-112608: Duc Anh Nguyen & Ta Duc Thien
Entry added October 26, 2026
Impact: A sandboxed process may be able to circumvent sandbox restrictions
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2026-86876: Chris Bailey - Short Circuit
Impact: Processing a maliciously crafted media file may lead to unexpected app termination or corrupt process memory
Description: A use after free issue was addressed with improved memory management.
CVE-2026-86913: Meta Product Security
Entry added October 19, 2026
Available for: Apple Watch Series 9 and later
Impact: An app may be able to access motion data from headphones without user consent
CVE-2026-43737: Stuart Wallace
Impact: Processing web content may lead to a denial-of-service
CVE-2026-65412: Pavan Nallamothu
Impact: Processing a maliciously crafted font may result in the disclosure of process memory
Description: An out-of-bounds read was addressed with improved bounds checking.
CVE-2026-84596: ret2happy, Meta Product Security
Impact: Processing a maliciously crafted file may lead to unexpected app termination
Description: An out-of-bounds write issue was addressed with improved bounds checking.
CVE-2026-84575: Mustafa Calap (@ordinal0, dbg.re)
Impact: Processing a maliciously crafted image may lead to unexpected app termination
Description: A buffer overflow was addressed with improved bounds checking.
CVE-2026-84571: stratan (@5tratan), Peter Malone
Available for: Apple Watch Series 9 and later
Impact: Processing a maliciously crafted asset catalog may lead to unexpected process termina
This page as .md · .json · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.