--- id: "CVE-2026-84534" kind: "vulnerability" aliases: ["CVE-2026-84534"] title: "A path handling issue was addressed with improved validation" severity: "medium" cvss: 5.5 epss: null exploited: false status: "open" category: "vendor" products: [{"name": "apple ipados", "fixed": ["27.0"], "affected": "< 27.0", "ecosystem": "vendor"}, {"name": "apple iphone os", "fixed": ["27.0"], "affected": "< 27.0", "ecosystem": "vendor"}, {"name": "apple macos", "fixed": ["15.8"], "affected": ">= 15.0, < 15.8", "ecosystem": "vendor"}, {"name": "apple macos", "fixed": ["26.7"], "affected": ">= 26.0, < 26.7", "ecosystem": "vendor"}, {"name": "apple visionos", "fixed": ["27.0"], "affected": "< 27.0", "ecosystem": "vendor"}] ecosystems: ["vendor"] tags: ["apple", "ios", "ipad", "ipados", "iphone", "vendor", "vendor-advisory"] not_affected_if: ["already-updated", "no-malicious-app-installed"] published_at: "2026-09-14T21:17:29+00:00" first_seen_at: "2026-11-04T00:58:48+00:00" updated_at: "2026-11-04T01:16:38+00:00" sources: [{"source": "lab", "url": "https://support.apple.com/en-us/149034", "first_seen_at": "2026-11-04T00:58:48+00:00"}, {"source": "lab", "url": "https://support.apple.com/en-us/149041", "first_seen_at": "2026-11-04T00:58:49+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84534", "first_seen_at": "2026-11-04T01:16:38+00:00"}] --- # A path handling issue was addressed with improved validation Apple's iOS 27 and iPadOS 27 security notes list many fixed flaws across system components, including memory corruption that can crash the system or, in some listed entries, write kernel memory. Most entries require a malicious app already installed on the device, and some are denial-of-service issues triggered over radio or network. _Summary, check and fix written by a model from the sources; labelled as such._ ## Affected - vendor:apple ipados affected < 27.0 fixed 27.0 - vendor:apple iphone os affected < 27.0 fixed 27.0 - vendor:apple macos affected >= 15.0, < 15.8 fixed 15.8 - vendor:apple macos affected >= 26.0, < 26.7 fixed 26.7 - vendor:apple visionos affected < 27.0 fixed 27.0 ## How to check - Check the installed version under Settings > General > About (version unknown from sources for this exact fix level) - Compare against the release notes listed in the Apple advisory pages ## Fix - iOS 27 and iPadOS 27 as listed in the Apple advisory; the exact fixed build for this CVE is unknown from the sources ## Timeline - 2026-11-04T00:58:48+00:00 lab https://support.apple.com/en-us/149034 — Apple: About the security content of iOS 27 and iPadOS 27 - Apple Support - 2026-11-04T00:58:49+00:00 lab https://support.apple.com/en-us/149041 — Apple: About the security content of iOS 26.7 and iPadOS 26.7 - Apple Support - 2026-11-04T01:16:38+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-84534 ## Documents - [advisory] Apple: About the security content of iOS 27 and iPadOS 27 - Apple Support https://support.apple.com/en-us/149034 - [advisory] Apple: About the security content of iOS 26.7 and iPadOS 26.7 - Apple Support https://support.apple.com/en-us/149041 - [advisory] Vendor advisory: support.apple.com https://support.apple.com/en-us/149035 - [advisory] Vendor advisory: support.apple.com https://support.apple.com/en-us/149038 - [advisory] Vendor advisory: support.apple.com https://support.apple.com/en-us/149042 - [advisory] Vendor advisory: support.apple.com https://support.apple.com/en-us/149043 ## From the sources About the security content of iOS 27 and iPadOS 27 - Apple Support # About the security content of iOS 27 and iPadOS 27 This document describes the security content of iOS 27 and iPadOS 27. ## About Apple security updates 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. ## iOS 27 and iPadOS 27 Released September 14, 2026 ### Accelerate Framework Available for: iPhone 11 and later, iPad Pro 12.9-inch 4th generation and later, iPad Pro 11-inch 2nd generation and later, iPad Air 4th generation and later, iPad 9th generation and later, and iPad mini 6th generation 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 ### Accelerate Framework Available for: iPhone 11 and later, iPad Pro 12.9-inch 4th generation and later, iPad Pro 11-inch 2nd generation and later, iPad Air 4th generation and later, iPad 9th generation and later, and iPad mini 6th generation 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 ### Accessibility Available for: iPhone 11 and later, iPad Pro 12.9-inch 4th generation and later, iPad Pro 11-inch 2nd generation and later, iPad Air 4th generation and later, iPad 9th generation and later, and iPad mini 6th generation and later Impact: An app may be able to access sensitive user data Description: This issue was addressed with improved data protection. 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) ### Accessibility Available for: iPhone 11 and later, iPad Pro 12.9-inch 4th generation and later, iPad Pro 11-inch 2nd generation and later, iPad Air 4th generation and later, iPad 9th generation and later, and iPad mini 6th generation and later Impact: An app may be able to identify what other apps a user has installed Description: A privacy issue was addressed with improved handling of user preferences. CVE-2026-64761: Stuart Wallace, Sindre Sorhus ### Accounts Available for: iPhone 11 and later, iPad Pro 12.9-inch 4th generation and later, iPad Pro 11-inch 2nd generation and later, iPad Air 4th generation and later, iPad 9th generation and later, and iPad mini 6th generation and later Impact: A malicious application may be able to bypass Privacy preferences Description: An authorization issue was addressed with improved state management. CVE-2026-65404: Arni Hardarson (Neonix Security), Vinay Kumar Rasala (Xplo8E) from Appknox, Stuart Wallace, 이재영 ### APFS Available for: iPhone 11 and later, iPad Pro 12.9-inch 4th generation and later, iPad Pro 11-inch 2nd generation and later, iPad Air 4th generation and later, iPad 9th generation and later, and iPad mini 6th generation 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 ### App Intents Available for: iPhone 11 and later, iPad Pro 12.9-inch 4th generation and later, iPad Pro 11-inch 2nd generation and later, iPad Air 4th generation and later, iPad 9th generation and later, and iPad mini 6th generation 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 ### App Store Available for: iPhone 11 and later, iPad Pro 12.9-inch 4th generation and later, iPad Pro 11-inch 2nd generation and later, iPad Air 4th generation and later, iPad 9th generation and later, and iPad mini 6th generation 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) ### Apple Account Available for: iPhone 11 and later, iPad Pro 12.9-inch 4th generation and later, iPad Pro 11-inch 2nd generation and later, iPad Air 4th generation and later, iPad 9th generation and later, and iPad mini 6th generation and later Impact: An app may be able to use the Sign In With Apple authentication flow to access the user's Apple Account Description: An authentication issue was addressed with improved state management. CVE-2026-20683: Dem0ns (@天府简易信工作室), Abdelhak Kherroubi, Jasminder Pal Singh, Lehan Dilusha Jayasingha (Sri Lanka) ### Apple Intelligence Available for: iPhone 15 Pro and later, iPad Pro 12.9-inch 5th generation and later, iPad Pro 11-inch 2nd generation and later, iPad Air 5th generation and later, and iPad mini 7th generation Impact: An app may be able to access sensitive user data Description: An authorization issue was addressed with improved state management. CVE-2026-86920: Johan Wahyudi CVE-2026-86955: Abodi Dawoud Entry added October 19, 2026, updated October 26, 2026 ### Apple Neural Engine Available for: iPhone 11 and later, iPad Pro 12.9-inch 4th generation and later, iPad Pro 11-inch 2nd generation and later, iPad Air 4th generation and later, iPad 9th generation and later, and iPad mini 6th generation and later Impact: An app may be able to cause unexpected system termination Description: An integer overflow was addressed with improved input validation. CVE-2026-65408: tamdao ### Apple Neural Engine Available for: iPhone 11 and later, iPad Pro 12.9-inch 4th generation and later, iPad Pro 11-inch 2nd generation and later, iPad Air 4th generation and later, iPad 9th generation and later, and iPad mini 6th generation and later Impact: An app may be able to cause unexpected system termination or write kernel memory Description: A race condition was addressed with additional validation. CVE-2026-84634: S. Rosario Entry added October 26, 2026 ### Apple Neural Engine Available for: iPhone 11 and later, iPad Pro 12.9-inch 4th generation and later, iPad Pro 11-inch 2nd generation and later, iPad Air 4th generation and later, iPad 9th generation and later, and iPad mini 6th generation and later 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-2026-84595: tamdao Entry added October 26, 2026 ### AppleAVD Available for: iPhone 11 and later, iPad Pro 12.9-inch 4th generation and later, iPad Pro 11-inch 2nd generation and later, iPad Air 4th generation and later, iPad 9th generation and later, and iPad mini 6th generation 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 ### AppleDouble Available for: iPhone 11 and later, iPad Pro 12.9-inch 4th generation and later, iPad Pro 11-inch 2nd generation and later, iPad Air 4th generation and later, iPad 9th generation and later, and iPad mini 6th generation and later Impact: Mounting a disk image with maliciously crafted files may lead to unexpected system termination Description: An out-of-bounds write issue was addressed with improved bounds checking. CVE-2026-84519: Richard Zana ### AppleKeyStore Available for: iPhone 11 and later, iPad Pro 12.9-inch 4th generation and later, iPad Pro 11-inch --- _Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_