CVE-2025-30448: Apple iPadOS Auth Bypass Vulnerability

CVE-2025-30448 Overview

CVE-2025-30448 is a missing authorization vulnerability [CWE-862] affecting multiple Apple operating systems. An attacker can enable sharing of an iCloud folder without performing authentication. Apple addressed the issue by introducing additional entitlement checks in the affected components.

The flaw spans iOS, iPadOS, macOS Ventura, macOS Sonoma, macOS Sequoia, and visionOS. Because the attack vector is network-based and requires no privileges or user interaction, exposure is significant for users with iCloud folder sharing enabled. Apple published fixes across six security advisories on its support portal.

Critical Impact

An unauthenticated remote attacker can turn on iCloud folder sharing, potentially exposing private user data stored in iCloud Drive to unauthorized parties.

Affected Products

• Apple iOS and iPadOS (fixed in iOS 18.5, iPadOS 18.5, and iPadOS 17.7.7)
• Apple macOS Sequoia (fixed in 15.4), macOS Sonoma (fixed in 14.7.6), and macOS Ventura (fixed in 13.7.6)
• Apple visionOS (fixed in 2.5)

Discovery Timeline

• 2025-05-12 - CVE-2025-30448 published to the National Vulnerability Database
• 2026-04-02 - Last updated in NVD database

Technical Details for CVE-2025-30448

Vulnerability Analysis

The vulnerability is a missing authorization issue [CWE-862] within the iCloud folder sharing workflow on Apple platforms. The affected component fails to verify that the requesting process or principal holds the required entitlements before enabling sharing on an iCloud Drive folder. As a result, the protected action proceeds without authentication.

A successful attack changes the sharing state of an iCloud folder owned by the victim. This breaks confidentiality of the contents of the targeted folder, since data that was previously private becomes accessible through a share link or invited participants. The impact is amplified by the broad reach of iCloud across iPhone, iPad, Mac, and Vision Pro devices tied to a single Apple ID.

Apple's advisories describe the remediation as the addition of entitlement checks, indicating the underlying defect was an authorization gap rather than a memory safety or cryptographic flaw.

Root Cause

The root cause is an absent or insufficient authorization check in the code path that toggles iCloud folder sharing. The service trusted the request context without validating an entitlement that should have been required to perform the action. Apple's fix introduces additional entitlement checks to enforce proper authorization.

Attack Vector

The issue is exploitable over the network without authentication and without user interaction. An attacker who can reach the vulnerable interface can issue requests that activate sharing on a targeted iCloud folder. No specific exploit code or public proof-of-concept is referenced in the available data, and the issue is not listed in the CISA Known Exploited Vulnerabilities catalog.

No verified exploitation code is available. See the Apple security advisories referenced below for vendor-supplied technical details.

Detection Methods for CVE-2025-30448

Indicators of Compromise

• Unexpected activation of sharing on iCloud Drive folders that the user did not initiate
• New iCloud share invitations or share links generated outside of normal user activity
• Anomalous access to iCloud-hosted content from unfamiliar Apple IDs or geolocations

Detection Strategies

• Audit iCloud Drive sharing configuration across managed Apple devices and flag any folders whose sharing state changed without a corresponding user action
• Correlate iCloud account activity notifications with endpoint telemetry to identify share toggles that lack a legitimate originating process
• Compare installed OS build numbers against the patched versions (iOS/iPadOS 18.5, iPadOS 17.7.7, macOS 15.4, 14.7.6, 13.7.6, visionOS 2.5) to identify unpatched fleet devices

Monitoring Recommendations

• Enable Apple ID sign-in and sharing notifications so users receive alerts when folder sharing state changes
• Use mobile device management (MDM) reporting to track OS version compliance across iPhone, iPad, Mac, and Vision Pro endpoints
• Review iCloud sharing audit data periodically for sensitive folders containing regulated or confidential information

How to Mitigate CVE-2025-30448

Immediate Actions Required

• Update affected Apple devices to iOS 18.5, iPadOS 18.5, iPadOS 17.7.7, macOS Sequoia 15.4, macOS Sonoma 14.7.6, macOS Ventura 13.7.6, or visionOS 2.5
• Review iCloud Drive folders for unintended sharing and revoke any shares that were not authorized by the owner
• Enforce OS update compliance through MDM policies and block non-compliant devices from accessing corporate iCloud resources where feasible

Patch Information

Apple released fixes across multiple OS branches. Refer to the vendor advisories: Apple Support Document 122373, Apple Support Document 122404, Apple Support Document 122405, Apple Support Document 122717, Apple Support Document 122718, and Apple Support Document 122721. The fix adds additional entitlement checks to the affected component.

Workarounds

• No vendor-supplied workaround is documented; patching to the fixed OS versions is the supported remediation
• As an interim measure, minimize the volume of sensitive data stored in iCloud Drive folders on unpatched devices
• Disable iCloud Drive on devices that cannot be updated promptly and rely on alternative storage until the patch is applied

# Verify patched macOS build on managed endpoints
sw_vers -productVersion
# Expected: 15.4 or later (Sequoia), 14.7.6 or later (Sonoma), 13.7.6 or later (Ventura)