Live › vulnerability › CVE-2026-20683
Apple's advisory for iOS 27 and iPadOS 27 lists many fixed flaws across system components, ranging from app crashes and privacy leaks to a remote Bluetooth flaw that Apple says can allow arbitrary code execution. The entry for CVE-2026-20683 is an Apple Account authentication issue that lets an app use the Sign In With Apple flow to access the user's Apple Account.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-31 00:35 UTC, 0h before NVD. All times on this page are UTC.
Apple devices running iOS 27 or iPadOS 27 before the update, on the models the advisory lists (for example iPhone 11 and later and iPad models from the 4th generation Pro and 9th generation iPad onward). The Apple Account entry needs a malicious app installed on the device; the Bluetooth entry is reachable from radio range. Users on other Apple OS versions are outside this advisory.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| apple ipados | vendor | < 27.0 | 27.0 |
| apple iphone os | vendor | < 27.0 | 27.0 |
| apple macos | vendor | >= 15.0, < 15.8 | 15.8 |
| apple macos | vendor | >= 26.0, < 26.7 | 26.7 |
| apple visionos | vendor | < 27.0 | 27.0 |
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
About the security content of iOS 27 and iPadOS 27 - Apple Support
This document describes the security content of iOS 27 and iPadOS 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: 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
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
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)
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.
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.
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.
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.
Entry added October 19, 2026
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.
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)
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
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.
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
CVE-2026-84634: S. Rosario
Entry added October 26, 2026
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.
Entry added October 26, 2026
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.
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.
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.
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,
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