External risk intelligence

Apple OS Authorization Flaw Allows Sensitive Data Access

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2025-31255

This vulnerability affects local operating system components and installed applications on client-side end-user devices (iOS, iPadOS, macOS, tvOS, watchOS). These systems are typically not exposed to the public internet as servers or gateways and require local execution or user interaction to facilitate data access, making them very unlikely to be reachable in common network-based attack scenarios.

Apple Ipados

before 26.014.0 to before 14.815.0 to before 15.7

Halo Surface Signal: 1 out of 5 — much less likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

An authorization flaw in Apple operating systems could allow an app to access sensitive user data. This issue has been addressed in recent updates across iOS, iPadOS, macOS, tvOS, and watchOS. The main concern is confirming relevance and exposure to understand potential impact.

Apps may access sensitive user information.
Affects a wide range of Apple devices.
Confirm relevance and exposure across your fleet.

Attack Path

How an attacker could exploit the issue

An attacker could potentially access sensitive user data by exploiting an authorization issue within the operating system. This vulnerability, which has been fixed in later versions of Apple's operating systems, could allow an app to bypass intended security restrictions.

No specific entry conditions are mentioned.
Trigger point involves an app accessing data.
Risk is unauthorized access to sensitive data.

Live Threat

Current exploitation, exposure, and threat context

An authorization issue could allow an app to access sensitive user data on affected Apple devices when conditions are met. This vulnerability may permit an app to bypass intended access controls, potentially exposing private information.

Sensitive user data on devices.
An app could access data without authorization.
Unauthorized access to private user information.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability impacts Apple operating systems and could allow an app to access sensitive user data. The first practical step is to identify all affected devices, determine their exposure and business criticality, and locate the accountable owner for each. Planning remediation should then be risk-based.

Application and device owners should lead remediation.
Verify all affected Apple devices are inventoried.
Plan updates based on device criticality.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is the software affected by CVE-2025-31255?

This vulnerability affects core operating systems across the Apple ecosystem, including iOS, iPadOS, macOS (Sequoia and Sonoma), tvOS, and watchOS. These platforms manage the foundation for how applications interact with device hardware and user data. By maintaining strict authorization boundaries, these operating systems ensure that apps remain sandboxed and cannot access information or files they are not explicitly permitted to see or use.

What does this authorization flaw mean for security?

CVE-2025-31255 is classified as CWE-285, which refers to an Improper Authorization weakness. In plain terms, the operating system failed to properly verify if an application had the necessary permission to perform a specific action. Because of this, an app could bypass security checks that are supposed to keep sensitive user data private, effectively granting the app access to information it should have been blocked from reading.

How does an app trigger this vulnerability?

The issue stems from how the system manages authorization states when an app requests data. While specific complex trigger conditions are not detailed, the flaw involves the system incorrectly granting access during these internal requests. It is important to note that simply having an app installed does not automatically compromise a device; the vulnerability requires the specific conditions of an authorization request to be met for the bypass to occur.

Is my device relevant to this CVE?

According to Halo Surface Signal, this vulnerability impacts end-user devices that are typically not exposed to the public internet like servers are. Because these systems generally require local execution or user interaction to facilitate data access, the likelihood of a remote, network-based attack is very low. You should prioritize assessment if your devices are used in environments where untrusted apps might be installed or if they store highly sensitive data.

Do I need to update my Apple devices?

Yes. The practical response is to identify all devices running versions prior to the fixed releases—such as iOS 26, macOS Sequoia 15.7, or macOS Sonoma 14.8—and schedule updates accordingly. Start by inventorying your hardware, determining which devices handle the most critical data, and assigning owners to oversee the patching process. Updating the operating system is the primary method to resolve the underlying authorization state management flaw.

References

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.