CVE-2025-30439 Overview
CVE-2025-30439 is an information disclosure vulnerability affecting multiple Apple operating systems. An attacker with physical access to a locked device can view sensitive user information without unlocking it. Apple addressed the issue with improved checks across its product line.
The flaw is categorized under [CWE-200] (Exposure of Sensitive Information to an Unauthorized Actor). Apple shipped fixes in iOS 18.4, iPadOS 18.4, macOS Sequoia 15.4, visionOS 2.4, and watchOS 11.4. Exploitation requires physical proximity to the target device, which limits mass exploitation but remains relevant for lost, stolen, or unattended devices.
Critical Impact
An attacker with physical access to a locked Apple device can view sensitive user information without authenticating, bypassing lock screen protections.
Affected Products
- Apple iOS and iPadOS versions before 18.4
- Apple macOS Sequoia before 15.4
- Apple visionOS before 2.4 and watchOS before 11.4
Discovery Timeline
- 2025-03-31 - CVE-2025-30439 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-30439
Vulnerability Analysis
The vulnerability allows unauthorized viewing of sensitive user information from a locked Apple device. Apple's advisory describes the fix as "improved checks," indicating the affected component did not sufficiently validate the device lock state before exposing data to the user interface.
Exploitation requires physical possession of the target device. The attacker does not need credentials, prior authentication, or user interaction. Confidentiality is impacted; integrity and availability are not affected by this issue.
The vulnerability spans Apple's shared operating system code base, appearing on iPhone, iPad, Mac, and Vision Pro. This suggests the flawed component is part of a framework or subsystem common to those platforms, such as a system UI element accessible from the lock screen.
Root Cause
The root cause is missing or incomplete authorization checks in a lock screen-accessible surface. A code path returned or rendered protected user data without verifying that the device was in an unlocked state. Apple's remediation adds the missing state validation before data is displayed.
Attack Vector
An attacker with physical access to a locked, vulnerable device interacts with the exposed surface, such as a widget, notification handler, accessibility feature, or system control, to trigger the unchecked code path. The device returns sensitive information rendered on-screen while remaining locked. No exploit code has been published, and the issue is not listed in CISA KEV. See the Apple Security Advisory #122371, #122373, #122376, and #122378 for vendor details.
Detection Methods for CVE-2025-30439
Indicators of Compromise
- No public indicators of compromise are associated with CVE-2025-30439. Exploitation is local, physical, and leaves minimal forensic traces on the device.
- Unexpected physical possession events, such as device recovery after being lost or stolen, should be treated as potential exposure.
Detection Strategies
- Inventory Apple endpoints in Mobile Device Management (MDM) and flag devices reporting iOS/iPadOS below 18.4, macOS Sequoia below 15.4, visionOS below 2.4, or watchOS below 11.4.
- Correlate device loss or theft reports with the OS version present at the time of the incident to assess whether the device was vulnerable during the exposure window.
Monitoring Recommendations
- Configure MDM compliance policies to alert on devices running pre-patch OS versions and to enforce automatic updates.
- Monitor lost device workflows and enable Find My or equivalent remote wipe capabilities for devices that fall outside physical control.
- Review lock screen widget and notification configurations across the fleet to minimize data exposed on locked devices.
How to Mitigate CVE-2025-30439
Immediate Actions Required
- Update all Apple devices to iOS 18.4, iPadOS 18.4, macOS Sequoia 15.4, visionOS 2.4, or watchOS 11.4 or later.
- Enforce update compliance through MDM and block non-compliant devices from accessing corporate resources.
- For devices reported as lost or stolen prior to patching, initiate remote lock or wipe and rotate any credentials that may have been visible on the lock screen.
Patch Information
Apple has released patches in iOS 18.4, iPadOS 18.4, macOS Sequoia 15.4, visionOS 2.4, and watchOS 11.4. Refer to Apple Security Advisory #122371, #122373, #122376, and #122378 for version-specific details.
Workarounds
- Disable lock screen access to widgets, notification previews, Siri, Wallet, and Control Center on managed devices until patching is complete.
- Require a strong passcode and enable biometric authentication to reduce the window in which sensitive information is retrievable.
- Enable data protection features and remote wipe capabilities so lost or stolen devices can be neutralized quickly.
# Configuration example
# Verify installed OS version on macOS
sw_vers
# Verify installed OS version on iOS/iPadOS via MDM query or Settings > General > About
# Ensure ProductVersion is >= 18.4 (iOS/iPadOS), >= 15.4 (macOS Sequoia),
# >= 2.4 (visionOS), or >= 11.4 (watchOS)
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
