CVE-2025-46308: Apple iOS, iPadOS, macOS Authorization Bypass—Sensitive Data Disclosure

Technical summary

CVE-2025-46308 is an authorization bypass vulnerability (CWE-284) in Apple's iOS, iPadOS, and macOS platforms. The root cause lies in insufficient state management within the authorization subsystem, allowing third-party applications to circumvent permission controls and access sensitive user information. The CVSS 3.1 score of 5.3 reflects a network-accessible, low-complexity attack that requires no privileges or user interaction but results only in confidentiality impact—integrity and availability are not affected. The vulnerability exists in the trust boundary between the OS kernel and user-space applications, specifically in how the system validates app authorization requests and maintains the state of previously-granted or denied permissions.

Business impact

For organizations with Apple device fleets, this vulnerability poses a data exposure risk, particularly for enterprises managing confidential communications, financial data, or personally identifiable information on iOS and macOS devices. A malicious app distributed through official or unofficial channels could silently harvest sensitive information without triggering user permission prompts. The impact scales with the number of deployed devices and the sensitivity of data accessible through affected apps. Companies relying on Apple's permission model as a security control should treat this as a medium-priority incident response item, especially if they lack Mobile Device Management (MDM) controls to enforce rapid patch deployment.

Affected systems

Vulnerable versions include: iOS prior to 18.4, iPadOS prior to 18.4, and macOS Sequoia prior to 15.4. All three platforms share the underlying authorization architecture affected by this flaw. Any iPhone, iPad, or Mac running older versions is at risk if a compromised or malicious app is installed. Organizations should verify the specific build numbers of deployed devices against Apple's official security release notes to confirm patched status.

Exploitability

Exploitation requires an attacker to deliver a malicious app to a target device—either through app store compromise, sideloading, or user-directed installation of a trojanized legitimate app. No user interaction is required once the app runs. The attack surface is broad (any installed app can attempt to exploit this), but successful exploitation depends on the attacker's ability to distribute or trick users into running their code. Given the CVSS vector (AV:N, AC:L, PR:N, UI:N), the barrier is low once the app is present. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog and has no public exploit code reported as of the published date, suggesting limited real-world weaponization—though absence of reports does not guarantee absence of active exploitation.

Remediation

Users and administrators should immediately apply the security updates: iOS 18.4, iPadOS 18.4, or macOS Sequoia 15.4 or later. Apple has fixed the authorization state management logic in these releases. For organizations using Mobile Device Management, deploy these updates as priority patches. For individual users, enable automatic updates or manually check Settings > General > Software Update (iOS/iPadOS) or System Settings > General > Software Update (macOS). No workaround exists short of patching; reliance on app-level permission grants is insufficient until the OS-level fix is installed.

Patch guidance

Verify your device is running iOS 18.4, iPadOS 18.4, or macOS Sequoia 15.4 (or later minor/maintenance versions of 15.x). Check the full build number in Settings to confirm patch application. For enterprise deployments, use MDM solutions to push these updates to managed devices and generate compliance reports. Prioritize devices used by high-value targets (executives, sensitive departments) and devices with access to cloud-based confidential systems. Test updates in a small pilot group first if your environment requires change control, but treat this as a rapid-deployment scenario due to the authorization bypass nature.

Detection guidance

Monitor for suspicious app behavior using security monitoring tools that can log file system and network access patterns. If EDR (Endpoint Detection and Response) tools are deployed on macOS, look for processes attempting to read sensitive files or user defaults outside their declared permissions. On managed iOS/iPadOS devices, enable Mobile Threat Defense (MTD) solutions that can detect apps attempting unauthorized information access. Network-based indicators are minimal; app-level detection via anomalous data exfiltration is the primary signal. Audit your app inventory—remove untrusted third-party apps and any apps that have not been updated by their publisher.

Why prioritize this

This vulnerability merits medium-to-high priority in your patch queue because it affects three major Apple platforms and enables unauthorized access to sensitive user data without user consent. The attack surface is wide (any installed app), the complexity is low (no user interaction), and the impact is direct information disclosure. However, it does not affect system availability or integrity, and there is no evidence of active exploitation. Organizations with sensitive data on Apple devices and those subject to compliance frameworks requiring timely OS patching should prioritize this immediately; others can batch it with regular monthly updates but should not defer beyond the next scheduled maintenance window.

Risk score, explained

The CVSS 3.1 score of 5.3 (Medium) accurately reflects the vulnerability's profile: it has broad attack surface (Network-accessible, no authentication required, low complexity), results in direct confidentiality breach (via information disclosure), and affects the core trust model of iOS/iPadOS/macOS. The score does not escalate to High because there is no integrity compromise, no denial of service, and the attack prerequisite (malicious app installation) requires some attacker effort. The absence of system-wide remote code execution or privilege escalation also constrains the rating. For risk-sensitive environments handling payment card data, health records, or intellectual property, the business risk may exceed the numerical CVSS score; context matters.

Frequently asked questions