CVE-2025-24206 is an authentication bypass vulnerability in Apple’s iOS, iPadOS, and related operating systems, caused by improper state management during the authentication process. This flaw allows an attacker positioned on the same local network segment to circumvent authentication policies without needing any privileges or user interaction. The vulnerability affects multiple Apple platforms, including iOS 18.x, iPadOS 17.x and 18.x, macOS Sequoia, Sonoma, Ventura, tvOS, and visionOS. The root cause is linked to CWE-288, indicating that the attacker can exploit an alternate path or channel to bypass authentication controls. Apple has released patches in the form of updated OS versions (iOS 18.4, iPadOS 18.4 and 17.7.6, macOS 15.4, 14.7.5, 13.7.5, tvOS 18.4, visionOS 2.4) to address the issue by improving state management in the authentication mechanism. The vulnerability has a CVSS 3.1 score of 7.7, with a vector indicating local network attack vector (AV:L), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), and high confidentiality and integrity impacts (C:H/I:H), but no impact on availability (A:N). No public exploits have been reported yet, but the vulnerability’s nature makes it a significant risk in environments where attackers can gain local network access.

The vulnerability allows attackers on the same local network to bypass authentication policies on Apple devices, potentially gaining unauthorized access to sensitive data and system functions. This compromises the confidentiality and integrity of affected devices, enabling data theft, unauthorized configuration changes, or lateral movement within a network. Since no user interaction or privileges are required, exploitation can be stealthy and automated. Organizations relying heavily on Apple devices, especially in environments with shared or untrusted networks (e.g., corporate Wi-Fi, public hotspots), face increased risk of targeted attacks or insider threats. The lack of availability impact means systems remain operational but compromised, complicating detection. The vulnerability could undermine trust in Apple’s security posture if exploited at scale, affecting enterprise, government, and consumer users worldwide.

Organizations should prioritize updating all affected Apple devices to the patched OS versions: iOS 18.4, iPadOS 18.4 and 17.7.6, macOS Sequoia 15.4, Sonoma 14.7.5, Ventura 13.7.5, tvOS 18.4, and visionOS 2.4. Network segmentation should be enforced to limit local network access only to trusted devices and users, reducing exposure to potential attackers. Employ strong network access controls such as WPA3 encryption and 802.1X authentication to secure Wi-Fi networks. Monitor local network traffic for unusual authentication bypass attempts or anomalous device behavior. Use endpoint detection and response (EDR) solutions capable of detecting suspicious authentication events on Apple devices. Educate users about risks of connecting to untrusted networks and encourage use of VPNs when remote. Disable unnecessary local network services on Apple devices to reduce attack surface. Regularly audit device OS versions and patch compliance to ensure timely remediation.