CVE-2025-24137 is a type confusion vulnerability classified under CWE-843, affecting multiple Apple operating systems including iOS, iPadOS, macOS, tvOS, and visionOS. Type confusion occurs when a program mistakenly treats a piece of memory as a different type than intended, leading to memory corruption. In this case, an attacker on the same local network can exploit this flaw to corrupt process memory, potentially enabling arbitrary code execution, privilege escalation, or denial of service. The vulnerability does not require prior authentication but does require user interaction, such as triggering a network-based action or service. Apple addressed this issue by implementing improved type checks in the affected OS versions: iOS 18.3, iPadOS 18.3 and 17.7.4, macOS Sequoia 15.3, macOS Sonoma 14.7.3, tvOS 18.3, and visionOS 2.3. The CVSS v3.1 score of 8.0 reflects high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required. Although no exploits are currently known in the wild, the vulnerability poses a significant risk due to the widespread use of Apple devices and the potential for local network attackers to compromise device security.

The vulnerability allows attackers on the local network to corrupt process memory, which can lead to arbitrary code execution, data leakage, or denial of service on affected Apple devices. This compromises confidentiality, integrity, and availability of systems and data. Organizations relying on Apple devices for sensitive communications, business operations, or critical infrastructure may face increased risk of targeted attacks, especially in environments with untrusted local networks such as public Wi-Fi or enterprise guest networks. The requirement for user interaction limits remote exploitation but does not eliminate risk, particularly in scenarios where users connect to compromised or hostile networks. The vulnerability could be leveraged to pivot into broader network attacks or to bypass security controls on Apple devices, impacting enterprise security posture and user privacy globally.

1. Apply the latest security updates immediately: upgrade to iOS 18.3, iPadOS 18.3 or 17.7.4, macOS Sequoia 15.3, macOS Sonoma 14.7.3, tvOS 18.3, or visionOS 2.3 as applicable. 2. Restrict access to local networks and segment networks to limit exposure to untrusted devices. 3. Educate users to avoid connecting to unknown or unsecured Wi-Fi networks and to be cautious with prompts requiring interaction when on local networks. 4. Employ network monitoring to detect unusual local network activity that could indicate exploitation attempts. 5. Use endpoint protection solutions capable of detecting memory corruption or anomalous process behavior on Apple devices. 6. Implement strong network access controls and consider VPN usage to secure local network communications. 7. Regularly audit and update device configurations to minimize attack surface and ensure compliance with security policies.