CVE-2025-30430: Apple iPadOS Auth Bypass Vulnerability

CVE-2025-30430 Overview

CVE-2025-30430 is a critical authentication bypass vulnerability affecting Apple's password autofill functionality across multiple operating systems. The flaw resides in improper state management within the authentication flow, allowing password autofill to populate credentials even after a failed authentication attempt. This vulnerability could enable unauthorized access to user accounts on affected Apple devices.

Critical Impact

Password autofill may fill in passwords after failing authentication, potentially exposing user credentials to unauthorized parties and bypassing authentication security controls.

Affected Products

• Apple iPadOS (versions prior to 18.4)
• Apple iOS / iPhone OS (versions prior to 18.4)
• Apple macOS Sequoia (versions prior to 15.4)
• Apple visionOS (versions prior to 2.4)

Discovery Timeline

• March 31, 2025 - CVE-2025-30430 published to NVD
• November 3, 2025 - Last updated in NVD database

Technical Details for CVE-2025-30430

Vulnerability Analysis

This authentication bypass vulnerability (CWE-287) affects Apple's password autofill mechanism across iOS, iPadOS, macOS, and visionOS. The core issue stems from improper state management within the authentication workflow, where the system fails to properly track and enforce authentication state after a failed login attempt.

Under normal operation, password autofill should only populate credentials when proper authentication succeeds. However, due to this state management flaw, the autofill mechanism may incorrectly determine that authentication has succeeded when it has actually failed, leading to credential exposure.

The vulnerability is particularly concerning because it can be exploited remotely without requiring any privileges or user interaction, making it accessible to a wide range of attackers.

Root Cause

The root cause of CVE-2025-30430 lies in improper state management within Apple's authentication subsystem. When an authentication attempt fails, the system does not correctly update or validate the authentication state before allowing password autofill operations to proceed. This creates a race condition or logic error where the autofill mechanism operates on stale or incorrect state information, treating a failed authentication as successful.

Attack Vector

The vulnerability is exploitable over the network without requiring any prior authentication or privileges. An attacker could potentially craft a malicious authentication request or manipulate the authentication flow to trigger the vulnerable state condition. Once triggered, the password autofill mechanism may expose stored credentials despite the authentication failure.

The attack scenario could involve:

1. Initiating an authentication request against a targeted service
2. Intentionally failing or manipulating the authentication response
3. Exploiting the improper state management to trigger autofill with exposed credentials

Due to the sensitive nature of this vulnerability, no verified proof-of-concept code has been publicly released. Technical details can be found in the Apple Support Advisory #122371 and related Full Disclosure posts.

Detection Methods for CVE-2025-30430

Indicators of Compromise

• Unusual password autofill behavior following failed authentication attempts
• Unexplained credential exposure or unauthorized account access on Apple devices
• Authentication logs showing successful credential usage immediately after failed attempts
• Anomalous keychain access patterns that don't correlate with successful authentications

Detection Strategies

• Monitor system logs for authentication state inconsistencies or unexpected autofill events
• Implement endpoint detection rules to flag password manager or keychain access following authentication failures
• Deploy behavioral analysis to detect credential access patterns that deviate from normal user authentication workflows
• Leverage SentinelOne Singularity platform to detect anomalous credential handling on macOS and iOS endpoints

Monitoring Recommendations

• Enable verbose logging for authentication events on all affected Apple operating systems
• Configure alerts for keychain access events that occur outside expected authentication contexts
• Implement network monitoring to detect potential remote exploitation attempts
• Review authentication logs regularly for evidence of exploitation patterns

How to Mitigate CVE-2025-30430

Immediate Actions Required

• Update all affected Apple devices to the patched versions: iOS 18.4, iPadOS 18.4, macOS Sequoia 15.4, or visionOS 2.4
• Audit recent authentication logs for signs of potential exploitation
• Consider temporarily disabling password autofill on critical systems until patches are applied
• Reset passwords for any accounts that may have been exposed on vulnerable devices

Patch Information

Apple has addressed this vulnerability through improved state management in the following releases:

Organizations should prioritize deployment of these security updates across all managed Apple devices.

Workarounds

• Disable password autofill functionality in device settings until patches can be applied
• Use a third-party password manager with independent authentication state tracking
• Implement additional authentication layers (MFA) for sensitive accounts
• Restrict network access on unpatched devices to limit remote exploitation potential

# macOS: Disable password autofill via command line (temporary workaround)
defaults write com.apple.Safari AutoFillPasswords -bool false
defaults write -g AutoFillPasswords -bool false

# Verify the setting
defaults read com.apple.Safari AutoFillPasswords