CVE-2026-28996: Apple iPadOS Race Condition Vulnerability

CVE-2026-28996 Overview

CVE-2026-28996 is a race condition vulnerability affecting multiple Apple operating systems. The flaw allows a locally installed application to access sensitive user data through a timing window where validation checks can be bypassed. Apple addressed the issue by adding additional validation logic to close the race window. The vulnerability is classified under [CWE-362] (Concurrent Execution using Shared Resource with Improper Synchronization).

Critical Impact
A malicious app installed on an affected Apple device may be able to access sensitive user data by exploiting a timing window in concurrent operations, bypassing intended access controls.

Affected Products

Apple iOS and iPadOS (fixed in iOS 26.5 and iPadOS 26.5)
Apple macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, and macOS Tahoe 26.5
Apple tvOS 26.5, visionOS 26.5, and watchOS 26.5

Discovery Timeline

2026-05-11 - CVE-2026-28996 published to NVD
2026-05-14 - Last updated in NVD database

Technical Details for CVE-2026-28996

Vulnerability Analysis

The vulnerability is a race condition affecting Apple operating systems across the entire device ecosystem. Race conditions occur when the security of an operation depends on the timing or ordering of events that are not properly synchronized. In this case, a malicious application can exploit the timing gap between a validation check and the subsequent use of the validated resource. The flaw enables unauthorized access to sensitive user data that should otherwise be protected by the operating system's access control framework.

Exploitation requires the attacker to have local access through a malicious or compromised application running on the device. User interaction is required, which limits remote exploitation scenarios. The impact is restricted to confidentiality, with no direct effect on integrity or availability of the system.

Root Cause

The root cause is insufficient synchronization between concurrent operations in the affected Apple OS components. The race condition allowed a window in which validation state could be modified or bypassed before a privileged operation completed. Apple's fix introduces additional validation steps to ensure that state consistency is maintained throughout the operation, eliminating the exploitable timing window.

Attack Vector

The attack vector is local. A threat actor must deliver a malicious application to the target device through the App Store, sideloading on platforms that allow it, or social engineering. Once executed, the app races system operations to access protected user data such as personal information, credentials, or other private content stored on the device. Because user interaction is required, attackers typically pair this technique with a lure that triggers the necessary user action.

No public proof-of-concept exploit code has been published for this issue. Technical exploitation details are described in prose; refer to the Apple Support Document #127110 for vendor-supplied information.

Detection Methods for CVE-2026-28996

Indicators of Compromise

Unexpected application access to sensitive data stores such as Contacts, Photos, Health, or Keychain outside of normal user interaction patterns.
Applications performing high-frequency, rapid system calls suggestive of race condition exploitation attempts.
Installation of unsigned or sideloaded applications from unknown developers on managed Apple devices.

Detection Strategies

Monitor mobile device management (MDM) telemetry for devices running pre-26.5 OS versions and flag those that have not received the security update.
Inspect application entitlements and runtime behavior for anomalous access to privacy-protected APIs.
Correlate process activity with privacy framework events to identify applications attempting unauthorized data access.

Monitoring Recommendations

Track Apple OS version compliance across the enterprise fleet through MDM reporting dashboards.
Review application install logs and developer signatures for newly deployed apps on corporate-managed Apple devices.
Audit privacy permission grants and revocations for unusual patterns that may indicate exploitation attempts.

How to Mitigate CVE-2026-28996

Immediate Actions Required

Update all Apple devices to iOS 26.5, iPadOS 26.5, macOS Sequoia 15.7.7, macOS Sonoma 14.8.7, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, or watchOS 26.5.
Enforce OS version compliance through MDM policies and quarantine devices that remain on vulnerable builds.
Audit installed applications and remove untrusted or sideloaded apps from managed devices.

Patch Information

Apple has released security updates that address the race condition through additional validation. Detailed advisories are available in Apple Support Document #127110, Apple Support Document #127115, Apple Support Document #127116, Apple Support Document #127117, Apple Support Document #127118, Apple Support Document #127119, and Apple Support Document #127120.

Workarounds

No vendor-supplied workaround exists; applying the security update is the only effective remediation.
Restrict application installation to vetted sources such as the official App Store and approved enterprise app catalogs.
Limit privacy permissions granted to third-party applications to the minimum required for functionality.

bash

# Verify installed iOS/iPadOS version on a managed device via MDM query
# Example using a generic MDM CLI helper
mdmctl query --device-id <DEVICE_ID> --attribute OSVersion

# Enforce minimum OS version policy (example pseudo-policy)
mdmctl policy set --name "AppleMinOS" \
  --ios-min 26.5 --ipados-min 26.5 \
  --macos-min 15.7.7 --tvos-min 26.5 \
  --watchos-min 26.5 --visionos-min 26.5