CVE-2025-46286: Apple iPadOS Auth Bypass Vulnerability

CVE-2025-46286 Overview

CVE-2025-46286 is a logic flaw in Apple iOS and iPadOS that affects the passcode requirement enforcement after Face ID enrollment. Restoring a device from a backup may prevent the system from requiring a passcode immediately after Face ID enrollment. Apple addressed the issue with improved validation in iOS 26.2 and iPadOS 26.2. The weakness is categorized under [CWE-288] Authentication Bypass Using an Alternate Path or Channel. Exploitation requires user interaction and yields limited confidentiality impact without affecting integrity or availability.

Critical Impact
An attacker with physical access to a restored device may bypass the expected passcode challenge that normally follows Face ID enrollment, weakening authentication guarantees on iOS and iPadOS devices.

Affected Products

Apple iOS prior to 26.2
Apple iPadOS prior to 26.2
Devices restored from backup with Face ID enrollment

Discovery Timeline

2026-01-09 - CVE-2025-46286 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-46286

Vulnerability Analysis

The vulnerability resides in the authentication state logic that governs when a passcode must be presented after biometric enrollment. Under normal conditions, iOS requires the device passcode immediately after a user enrolls a new Face ID template. This requirement ensures the enrolled biometric is bound to a known credential holder. When the device is restored from a backup, the state tracking that enforces this requirement is not properly validated. As a result, an attacker who enrolls Face ID on a restored device may skip the passcode prompt. The issue is tracked as [CWE-288] and reflects an authentication bypass through an alternate initialization path.

Root Cause

The root cause is insufficient validation of the post-restore authentication state. The enrollment workflow assumes prerequisites that the restore path does not enforce. Apple resolved the flaw by tightening validation logic in iOS 26.2 and iPadOS 26.2.

Attack Vector

An attacker requires user interaction and access to a device undergoing restore from backup. The attacker leverages the enrollment sequence to add a Face ID template without triggering the passcode challenge. Successful exploitation grants biometric access without the confirmation step Apple's design assumes.

No verified proof-of-concept code is publicly available. Refer to the Apple Support Document for vendor details.

Detection Methods for CVE-2025-46286

Indicators of Compromise

Unexpected Face ID enrollments recorded in device management logs shortly after a backup restore event.
Mobile device management (MDM) telemetry showing devices running iOS or iPadOS versions earlier than 26.2 after a restore workflow.
Absence of a passcode prompt event in authentication audit trails immediately following biometric enrollment.

Detection Strategies

Correlate MDM restore events with subsequent biometric enrollment events to flag missing passcode challenges.
Enforce compliance policies that verify the installed iOS or iPadOS version and quarantine devices below version 26.2.
Review authentication logs on enterprise-managed devices for enrollment sequences that lack passcode confirmation.

Monitoring Recommendations

Ingest MDM audit events into a centralized log platform and alert on Face ID enrollment following device restore.
Track OS version drift across the mobile fleet and prioritize devices that have not received the 26.2 update.
Monitor lost, stolen, or reassigned device workflows for evidence of unauthorized biometric enrollment.

How to Mitigate CVE-2025-46286

Immediate Actions Required

Update all iPhone and iPad devices to iOS 26.2 or iPadOS 26.2 immediately.
Enforce OS version compliance through MDM and block access from devices running vulnerable versions.
Instruct users to set a strong device passcode and verify passcode enforcement after any restore operation.

Patch Information

Apple released the fix in iOS 26.2 and iPadOS 26.2 by improving validation of the authentication state during Face ID enrollment on restored devices. Consult the Apple Support Document for the complete list of resolved issues and version guidance.

Workarounds

Manually lock the device and require a passcode entry immediately after completing any restore-from-backup workflow.
Delete and re-enroll Face ID after entering the passcode to ensure the biometric template is bound to a validated credential.
Restrict physical access to devices during restore operations, particularly in shared or enterprise deployment scenarios.

bash

# Configuration example: MDM compliance rule to require iOS/iPadOS 26.2 or later
minimum_os_version:
  ios: "26.2"
  ipados: "26.2"
action_on_noncompliance: block_corporate_access