CVE-2025-24177 is a vulnerability identified in Apple iOS and iPadOS operating systems that allows an attacker on the same local network to cause a denial-of-service condition by triggering a null pointer dereference. The root cause is insufficient input validation, which leads to the system dereferencing a null pointer and crashing. This vulnerability is classified under CWE-476 (NULL Pointer Dereference). The issue affects multiple Apple platforms, including iOS, iPadOS, and macOS versions prior to the patched releases (iOS/iPadOS 18.3, iPadOS 17.7.6, macOS Sequoia 15.3, macOS Sonoma 14.7.5, and macOS Ventura 13.7.5). The CVSS v3.1 base score is 7.5, indicating high severity, with an attack vector of network (local network), low attack complexity, no privileges required, no user interaction, and impact limited to availability (denial-of-service). The vulnerability does not impact confidentiality or integrity but can cause system crashes or reboots, disrupting device availability. No known exploits have been reported in the wild yet. The vulnerability is particularly concerning because it can be exploited remotely within a local network without authentication or user interaction, making it easier for attackers to disrupt services on vulnerable Apple devices. The fix involves improved input validation to prevent the null pointer dereference condition.

The primary impact of CVE-2025-24177 is denial-of-service, which can cause affected Apple devices to crash or become unresponsive. For organizations, this can lead to significant operational disruptions, especially in environments heavily reliant on iOS and iPadOS devices for critical communications, workflows, or control systems. The vulnerability could be exploited by attackers on the same local network, such as in corporate Wi-Fi environments, public hotspots, or enterprise LANs, to disrupt device availability. This may result in loss of productivity, interruption of business processes, and potential cascading effects if devices are part of larger integrated systems. Although confidentiality and integrity are not directly affected, the loss of availability can indirectly impact security posture and operational resilience. The absence of required authentication and user interaction lowers the barrier for exploitation, increasing the risk in shared network environments. Organizations with large deployments of Apple mobile devices, especially in sectors like finance, healthcare, government, and education, may face heightened risks. Additionally, critical infrastructure relying on Apple devices for monitoring or control could experience service interruptions.

To mitigate CVE-2025-24177, organizations should prioritize updating all affected Apple devices to the patched versions: iOS and iPadOS 18.3, iPadOS 17.7.6, and the specified macOS releases. Given the local network attack vector, network segmentation should be implemented to isolate critical devices from untrusted or guest networks. Employing network access controls and monitoring for unusual traffic patterns can help detect potential exploitation attempts. Disable or restrict unnecessary local network services on Apple devices to reduce exposure. Organizations should also educate users about connecting only to trusted networks and consider deploying endpoint detection and response (EDR) solutions capable of identifying abnormal device crashes or network activity. Regular vulnerability scanning and asset inventory management will ensure all devices are identified and patched promptly. For environments where immediate patching is not feasible, temporary mitigations such as restricting local network access or using VPNs to encrypt local traffic may reduce risk. Finally, maintain up-to-date backups and incident response plans to recover quickly from potential denial-of-service incidents.