CVE-2025-30422 is a buffer overflow vulnerability identified in Apple's AirPlay audio SDK, which also affects related components such as the AirPlay video SDK and CarPlay Communication Plug-in. The flaw arises from insufficient input validation, allowing an attacker positioned on the same local network to send specially crafted data packets that trigger a buffer overflow condition. This overflow can lead to an unexpected termination of the affected application, causing a denial of service (DoS) condition. The vulnerability does not require any authentication or user interaction, making it relatively easy to exploit within a local network environment. The issue has been addressed by Apple in AirPlay audio SDK version 2.7.1, AirPlay video SDK 3.6.0.126, and CarPlay Communication Plug-in R18.1 through improved input validation mechanisms. The CVSS 3.1 base score is 6.5, reflecting a medium severity level, with an attack vector limited to the local network, low attack complexity, no privileges required, and no user interaction needed. The impact is limited to availability, as confidentiality and integrity are not affected. No known exploits are currently reported in the wild. The vulnerability is classified under CWE-120, which pertains to classic buffer overflow errors that can lead to memory corruption and application crashes.

For European organizations, the primary impact of this vulnerability is the potential disruption of services relying on Apple AirPlay technologies, particularly in environments where AirPlay audio or video streaming is integral to operations, such as conference rooms, retail environments, hospitality, and automotive sectors using CarPlay. An attacker on the same local network could cause repeated application crashes, resulting in denial of service and degraded user experience. While the vulnerability does not allow for data theft or system compromise, the availability impact could interrupt critical audio/video communications or infotainment systems, potentially affecting business continuity and operational efficiency. Organizations with extensive use of Apple devices and AirPlay-enabled infrastructure are at higher risk. The lack of known exploits reduces immediate threat but does not eliminate the risk of future exploitation, especially in shared or public network environments.

1. Immediate update and patching: Organizations should prioritize upgrading to AirPlay audio SDK 2.7.1, AirPlay video SDK 3.6.0.126, and CarPlay Communication Plug-in R18.1 as soon as possible to incorporate the fixed input validation. 2. Network segmentation: Restrict access to local networks where AirPlay devices operate, isolating them from general user networks to limit attacker presence. 3. Monitor local network traffic: Deploy network monitoring tools to detect anomalous or malformed AirPlay traffic patterns that could indicate exploitation attempts. 4. Disable AirPlay services where not required: In environments where AirPlay functionality is unnecessary, disable these services to reduce the attack surface. 5. Implement strict access controls: Use MAC address filtering and network access control (NAC) to limit devices that can connect to local networks hosting AirPlay services. 6. Regular vulnerability scanning: Incorporate checks for outdated AirPlay SDK versions in asset management and vulnerability scanning processes to ensure timely patching. 7. Incident response readiness: Prepare for potential denial of service incidents by establishing response procedures to quickly restore affected services.